Big Think's Top 25 +1 Videos


Mama, Don't Let Your Babies Grow Up To Deny Evolution

If adults want to deny evolution, sure. That’s fine. Whatever. But those adults better not make their kids follow in step because we as society need them to be better. Bill Nye, everyone's favorite Science Guy, explains the importance of promoting evolution education for America's future voters and lawmakers.

My Man, Sir Isaac Newton

Are you at least 26 years-old? If so, you are older than Isaac Newton was when he invented calculus... on a dare! (If you're younger than 26, better hurry up.) Big Think expert and overall cool guy Neil deGrasse Tyson explains why Newton is the greatest physicist who ever and likely will ever live.

Will Mankind Destroy Itself?

Theoretical physicist Michio Kaku sees two major trends today. One eventually leads to a multicultural, scientific, tolerant society that will expand beyond Earth in the name of human progress. The other trend leads to fundamentalism, monoculturalism, and -- eventually -- civilizational ruin. Whichever of these two trends wins out will determine the fate of mankind. No pressure, everyone.

Ricky Gervais on the Principles of Comedy

Comedy isn't just about making people laugh, says actor Ricky Gervais. It's about making people think. And while different forms of comedy require different approaches, the crux of any good performance will always be rhythm.

Reading the Bible (Or the Koran, Or the Torah) Will Make You an Atheist

Author and magician Penn Jillette was asked to leave his Christian youth group by a pastor who told his parents: "He's no longer learning about the Bible from me. He is now converting everyone in the class to atheism." The reason? Jillette did his homework and was turned off by the hostilities of the text. It can be intimidating to come out as an atheist, especially in a religious community. Jillette found that having "out" atheist role models helped him feel unalone.

Henry Rollins: The One Decision that Changed My Life Forever

Punk legend Henry Rollins describes the biggest turning point in his life: the moment he decided to leave his job as manager of a Häagen-Dazs store and eventually become the lead singer of Black Flag. It was the courage to take a risk, plus a whole lot of luck, that got Rollins to where he is today.

5 Programming Languages Everyone Should Know

Java is "heavyweight, verbose, and everyone loves to hate it," but programmer Larry Wall still thinks you should know it. In this video, he offers suggestions for people interested in learning languages, as well as suggestions for those significantly less invested in computer programming.

The Importance of Unbelief

If you assume there’s no afterlife, Stephen Fry says, you’ll likely have a fuller, more interesting "now" life. The actor and comedian details the positive influence philosophers have had on his life, as well as his journey of understanding both what he believes and why he believes it.

Why be happy when you could be interesting?

We don't really want what we think we desire, says philosopher Slavoj Žižek.

James Gleick on the Common Character Traits of Geniuses

This video is part of a series on female genius, in proud collaboration with 92Y's 7 Days of Genius Festival.


The personalities of Isaac Newton and Richard Feynman were, on one level, extremely different. Biographer and former New York Times reporter James Gleick says Newton was argumentative, had few friends, and likely died a virgin. Feynman, on the other hand, loved dancing and going to parties, and had many friends in the scientific community. But in regards to their working habits, both men were solitary and had the ability to concentrate with a sort of intensity that is hard for mortals to grasp. At bottom, Gleick says geniuses tend to have a yearning for solitude which, though fruitful for their professional work, made the task of daily living more burdensome.

The Importance of Doing Useless Things

From poetry and ballet to mathematics and being clever, life is laden with frivolous pursuits that hold no bearing on our ability to survive. Yet, insists Richard Dawkins, if it weren’t for the development of these impractical activities, we wouldn’t be here.

Why monogamy is ridiculous

Dan Savage: the idea that one instance of infidelity should ruin a relationship is a new—and misguided—notion.

Dan Harris: Hack Your Brain's Default Mode With Meditation

Dan Harris explains the neuroscience behind meditation, but reminds us that the ancient practice isn't magic and likely won't send one floating into the cosmic ooze. He predicts that the exercise will soon become regularly scheduled maintenance, as commonplace as brushing your teeth or eating your veggies. Harris, an ABC News correspondent, was turned on to mediation after a live, on-air panic attack. His latest book is 10% Happier: How I Tamed the Voice in My Head, Reduced Stress Without Losing My Edge, and Found Self-Help That Actually Works--A True Story.

How Intellectuals Betrayed the Poor

For 40 years academics were duped into idolizing the idea of unfettered markets, says Cornel West, and now our society is paying a terrible price.

Why Some Races Outperform Others

A psychologist explains the latest research into education disparity.

Why It's So Hard for Scientists to Believe in God

Some scientists see religion as a threat to the scientific method that should be resisted. But faith "is really asking a different set of questions," says Collins.

Why Facebook Isn't Free

Internet pioneer Jaron Lanier argues that free technologies like Facebook come with a hidden and heavy cost – the livelihoods of their consumers.

How to Tell if You’re a Writer

For John Irving, the need for a daily ration of solitude was his strongest "pre-writing" moment as a child.

Your Behavior Creates Your Gender

Nobody is born one gender or the other, says the philosopher. "We act and walk and speak and talk in ways that consolidate an impression of being a man or being a woman."

Are You a Liberal Snob? Take The Quiz

Charles Mrray designed this quiz to have a salutary effect on bringing to people’s attention the degree to which they live in a bubble that seals them off from an awful lot of their fellow American citizens.

Why You Should Watch Filth

John Waters defends the creation and consumption of obscene films, and recommends some of his personal favorites.

What Are You Worth? Getting Past Status Anxiety.

Writer Alain De Botton says that status anxiety is more pernicious and destructive than most of us can imagine, and recommends getting out of the game altogether.

Sheila Heen on the Psychology of Happiness and Feedback

Sheila Heen, a Partner at Triad Consulting Group and a lecturer on Law at Harvard Law School, explains the psychology behind feedback and criticism. Heen is co-author of "Thanks for the Feedback: The Science and Art of Receiving Feedback Well."

Are You a Psychopath? Take the Test.

Psychologist Kevin Dutton presents the classic psychological test known as "the trolley problem" with a variation. Take the test and measure you response on the psychopathic spectrum.

Here's How to Catch a Liar, If You Really Want To

It’s very complex as to whether or not we really want to catch a liar. We think we do. What if we find out that both of our presidential candidates are lying? Then what do we do? I’m not saying they are; I never comment on anyone in office or running for office. Only after they’re out that they’re fair game. . . . Clinton said, "I didn’t have sex with that woman" and then gave her name. "That woman" is putting her at a distance from himself.

Why I Came Out at Age 81

As a teenager in the '40s, James Randi "would have gotten stoned" for being gay. But when he outed himself to the world in 2010, the reaction was "wonderful."

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Too often the concept of a circular economy is muddled up with some kind of advanced recycling process that would mean keeping our industrial system as it is and preserving a growing consumption model.


This idea is based on a belief that recycling will take care of everything.

One of the most startling examples of this is the part of the European Union's Circular Economy Action Plan which aims to increase recycling rates: up to 70% of all packaging waste by 2030 and 65% of all municipal waste by 2035. In a properly built circular economy, one should rather focus on avoiding the recycling stage at all costs. It may sound straightforward, but preventing waste from being created in the first place is the only realistic strategy.

While we obviously need to continue recycling for quite some time, putting the emphasis on genuine circular innovations – that is, moving us away from a waste-based model – should be our sole objective.

Recycling is linear

In a linear economy, we do not account for the side-effects generated by a product once sold to an end customer. The aim is to sell a maximum number of products at minimal cost. Continuous pressure to reduce costs leads to the creation of many of these side-effects – called externalities by economists. The higher a company's rate of production and the higher its efficiency, the more successful it will be at selling its goods in a fiercely competitive environment.


What is a circular economy?

This worked well in the 20th century when resources were easily available and raw material prices kept decreasing. Waste, as an economic externality, was not the producers' responsibility. Managing waste cycles, dumping it out of sight or, at best, recycling it – but only when it was cost-effective – were under the control of our national institutions.

Visionary manufacturers, who understand the upcoming challenges of increasing their economic resilience, know better: a product that is returned for repair will cost less to fix and sell again, than manufacturing it from scratch.

In our current model, we extract resources, transform them into products, and consume or use them, prior to disposing of them. Recycling only starts at the throwing-away stage: this is a process that is not made to preserve or increase value nor to enhance materials.

We need to understand that recycling is not an effective strategy for dealing with unused resource volumes in a growth model. We will find ourselves in a never-ending pursuit of continuously generated waste, rather than seeing the avoidance of waste as a path to beneficial innovations on many levels.

Of course, it is easier to think about recycling. This avoids changing the whole of our volume-based production model. But in a world where we have to shift our consumption patterns and use less energy, recycling no longer has all the answers.

Recycling is 'business-as-usual'

Since we cannot stop the volume of waste overnight, investments in the recycling industry are needed. But truly meaningful investment in developing a circular economy takes place outside of the recycling space. Indeed, the more we recycle and the more we finance recycling factories, the more we stay 'linear'. We mistakenly believe this is the best route to solve our problems - but by staying in a recycling-based economy, we will delay the transition to an advanced circular economy.

In a circular economy, resources do not end up as recyclables since products are made to last several lifecycles. Products' lifespans are extended via maintain, repair, redistribute, refurbishment and/or re-manufacture loops, thus they never end up in the low-value, high-need-for-energy loop: recycling.

We live in a world in dire need of disruptive innovations. Closing loops next to where customers live while avoiding waste is a short and longer-term win-win for any leading re-manufacturer. Short-term because you are in direct contact with your customers, and taking back a product that needs maintenance is an opportunity to better understand their needs and help them with additional services. Long-term because you will lower your exposure to future financial risks. Any of the feedback loops that exist prior to the recycling loop are an opportunity to take back control over your stock of resources – taking control away from the raw material markets, which may become highly volatile. Increased interactions with your customers, both commercial and financial, and an in-depth understanding of their needs, would increase customer loyalty and a business' overall resilience.

Re-using, re-distributing and/or remanufacturing strategies are the preferred approaches in a circular economy, as they are based on parts durability. Caring for and preserving the value of product components increases corporate economic resilience, while diminishing external market risks. Whether you are acting in a highly advanced or a developing economy, these strategies make crystal-clear sense: they are less costly in the long-run because repairing a product made to last is always less expensive than producing it from scratch.

Leapfrogging into valued supply chains

Following this approach, we must move away from activities that devalue the material, such as recycling, and instead invest in those activities that preserve it: reuse and remanufacture. These two are especially important since they create many more secure jobs. Walter R. Stahel, the godfather of the modern circular economy, introduced the metric of labor input-per-weight ratio (man-hour-per-kg, or mh/kg) to measure job creation in relation to resource consumption. He found that the ratio of mh/kg when building a remanufactured engine from used resources compared to making the same engine from virgin materials is 270:1. The impact on employment is huge.

The re-localization and the re-sizing of activities closer to customers become critical. Production sites should migrate from a highly centralized global hub to units designed to fulfill local needs. In developed markets, a possible plan could be to develop strategic partnerships with local service providers, who can provide the infrastructure. In emerging markets, where there is often an urgent need for jobs, leapfrogging straight into a national re-manufacturing strategy is the way forward. Becoming the next 'world factory' hub is an obsolete vision today.

One way to start thinking like a leader in the next economy while creating jobs could be in order of priority:

  • Reuse by repairing (goods) through re-hiring (people), while sharing the radical benefits (awareness) of such a model
  • Redistribute by promoting access (goods) through collaboration (people), while sharing information (awareness) about this model
  • Remanufacture via the ease of disassembly (goods) by training (people), while sharing the acquired knowledge (awareness) through this model
  • Migration of recycling activities by diverting (goods) to service models, transferring skills (people) to remanufacturing processes (awareness).

All of the above make sense in a world where planetary limits have already hit most economies.

Adopting a circular strategy by avoiding reliance on recycling is the way forward.

This is about genuine innovation derived from genuine leadership.

Reprinted with permission of the World Economic Forum. Read the original article.

  • It's easy to stumble down a rabbit hole when we consider the action beneficial like checking emails, stock prices, or sports scores.
  • However, if these seemingly beneficial actions take the place of something else we intended to do, they're just distractions. And we've been moved to these distraction as a psychological response to discomfort.
  • The truth is that distraction comes from within, and time management is just another form of pain management.
  • The City of Venice is currently enduring the worst flooding to strike it in 50 years.
  • The mayor has declared it to be a result of climate change.
  • During a debate over next years budget, and right after rejecting environmental proposals, the main chamber of the regional council flooded.

In a twist so on the nose you couldn't make it up, the regional council room of Venice was flooded last night immediately after the council rejected budget amendments to fight climate change.

The city is currently enduring the worst flooding in 50 years. More than three-quarters of the city is underwater. In some places, the water levels are more than six feet deep. The water damaged the Crypt of St. Mark's Basilica, and a state of emergency has been declared.

The councilors for the region of Veneto were discussing next year's budget as the water began to creep in according to councilor Andrea Zanoni's Facebook post.

The main portion of it reads:

"Ironically, the chamber was flooded two minutes after the majority League, Brothers of Italy, and Forza Italia parties rejected our amendments to tackle climate change,"

In a statement to CNN, the regional president Luca Zaia rejected the notion that he and his coalition were inattentive to the environment, saying, "Beyond propaganda and deceptive reading, we are voting (for) a regional budget that spent €965 million over the past three years in the fight against air pollution, smog, which is a determining factor in climate change. To say that we do nothing is a lie."

It seems even situational irony delivered by the fates isn't enough to convince some people.

The council has moved their meetings to nearby Treviso until such a time that their council chambers are usable again.

How does this tie to Climate Change?

The risks posed by climate change to Venice are both obvious; it is literally on the water, and well known. The mayor of Venice, Luigi Brugnaro, spoke to the issue this week. After saying the flooding had brought the great city "to its knees," he declared the exceptional flooding and damages to be "the effects of climate change" in a Twitter post.

He isn't wrong. Recent studies have suggested that if climate change continues unabated, Venice will be history in 100 years.

What will become of Venice?

Venice is both a UNESCO world heritage site and one of the world's great cities with a long and glorious history. To lose it to climate change would be unthinkable.

However, it is already sinking at the rate of one-fifth of an inch per year. This, combined with rising sea levels, may mean that the great city, already drowning in tourists, may soon literally be drowning.

There is some hope though. Recently, the Italian Government launched the MOSE program, which is designed to "part the sea" and keep Venice afloat by introducing a system of flood gates. In theory, they would be able to stop high tides up to ten feet from flooding the city and could be raised or lowered at will. However, the project has been plagued by problems since the start and is currently on track to be finished 11 years behind schedule.

Italy has also passed legislation requiring the science of Climate change to be taught in schools to all students. If these steps will be enough remains to be seen.

  • The European Medicines Agency granted special approval for an Ebola vaccine called Ervebo.
  • Ervebo has proven remarkably effective in clinical trials conducted in Africa.
  • An Ebola outbreak has killed more than 2,000 people in the Democratic Republic of Congo since August 2018.


Health regulators in Europe have issued the world's first approval for a vaccine against Ebola, and it's estimated to become widely available in 2020.

The European Medicines Agency granted a conditional marketing authorization this week that allows the U.S. pharmaceutical company Merck to market the vaccine, called Ervebo. Conditional marketing authorizations help to fast-track the approval process for drugs and therapies that treat "unmet medical needs." That's important when fighting often-deadly viral diseases like Ebola.

Since August 2018, Ebola has killed more than 2,000 people in the Democratic Republic of Congo (DRC). Besides the 2014 West African outbreak that killed more than 11,000 people, the 2018 DRC outbreak is so far the deadliest on record. And the number of cases continues to rise. But experimental vaccination programs have helped curb infection rates. In these programs, Ervebo was strikingly effective, showing an estimated protective efficacy of 97.5 percent, as the World Health Organization reported in April.

Centers for Disease Control and Prevention

"Finding a vaccine as soon as possible against this terrible virus has been a priority for the international community ever since Ebola hit West Africa five years ago," Vytenis Andriukaitis, commissioner in charge of Health and Food Safety at the EU's European Commission, said in a statement. "Today's decision is therefore a major step forward in saving lives in Africa and beyond."

Ervebo protects against a particularly infectious ebolavirus species called Zaire, one of four species known to infect humans. Zaire can also infect animals, like macaques. In 2005, researchers at the Public Health Agency of Canada's National Microbiology Laboratory developed an Ebola vaccine that protected macaques 100 percent of the time. But lack of funding and regulatory hurdles meant it'd take years, maybe decades, to prove the vaccine was safe and effective in humans.

Then the 2014 West African outbreak struck. With the need for an effective vaccine made clear, Merck obtained the license to Ervebo, known as rVSV-ZEBOV-GP, and soon the vaccine was being administered to people in Guinea as part of a clinical trial. The vaccination strategy there was to inoculate people who'd been in contact with others who'd been infected with Ebola. This is called ring vaccination.

But while ring vaccination was effective in preventing the spread of Zaire, it remains unclear just how long the protective effects last. That's a critical question for, say, health workers who get vaccinated to protect themselves against infection that might occur months later. There are also other ebolavirus species that other vaccines would need to address, such as the deadly Sudan species.

In addition to the conditional marketing authorization issued by the European Medicines Agency, the World Health Organization has "prequalified" the Ervebo, meaning it meets standards for safety and efficacy.

"[Prequalification] is a historic step towards ensuring the people who most need it are able to access this life-saving vaccine," WHO Director-General Dr. Tedros Adhanom Ghebreyesus said in the announcement. "Five years ago, we had no vaccine and no therapeutics for Ebola. With a prequalified vaccine and experimental therapeutics, Ebola is now preventable and treatable."

In the U.S., the Food and Drug Administration is expected to decide on approval in March 2020.

  • An orangutan named Sandra was granted non-human personhood rights in 2015 and has been moved from the Buenos Aires Zoo to a home in Florida.
  • Legal personhood is not synonymous with human being. A "non-human person" refers to an entity that possesses some rights for limited legal purposes.
  • Sentience might be the characteristic necessary for granting legal rights to non-human species.


After being granted legal personhood rights in 2015, a 33-year-old orangutan named Sandra has just moved into a new, spiffy central Florida home.

Sandra has joined 21 other orangutans and 31 chimpanzees to live at the Center for Great Apes where she is reportedly thriving. Born in Germany, Sandra spent 25 years at the Buenos Aires Zoo. She was released because, according to a landmark ruling in 2015, she is a legal person who was wrongly imprisoned for the majority of her life. In the ruling, Judge Elena Liberatori declared Sandra as a "non-human person" and, thus, entitled to better living conditions and some of the same legal rights as humans.

Non-human person definition

According to legal terminology, legal personhood is not exactly synonymous with human being. The law divides the world between two entities: things and persons. According to the Nonhuman Rights Project executive director, attorney Kevin Schneider, personhood is best understood as a container for rights. Things have no rights, but once an entity is defined as a person it can obtain some rights. So, a "non-human person" refers to an entity that is guaranteed some rights for limited legal purposes.

In Sandra's case, the ruling undercut species-membership as the basis for legally denying rights, freedoms, and protections. The Association of Officials and Lawyers for Animal Rights based its argument that Sandra should not be treated as an object based on the orangutan's "sufficient cognitive functions." But others have argued that it is sentience, rather than cognitive complexity, that is the essential characteristic for granting legal rights to non-human species.

The judge in Sandra's case agreed, telling the Associated Press that by giving Sandra non-human person status she wanted to shift society's view on other-than-human beings by telling them that "animals are sentient beings and that the first right they have is our obligation to respect them."

Degrees of Sentience

Photo Source: Wikimedia

Sentience is defined as the ability to perceive one's environment and translate those perceptions into various feelings, such as suffering or pleasure. This has little to do with a species' cognitive ability.

It's been argued that it is inappropriate to humanize animal behavior in this way. Yet, science can never be totally free from this anthropomorphism, and there's a solid argument as to why.

For one, humans can only ever think about animals by drawing on their own experiences, and this facilitates many of the research questions when studying other species. Yet, beyond scientific discovery, there is an ethical motivation for relating human emotions to animal experiences. Once we accept that other species might feel pain similar to what we feel, we become responsible for their suffering.

Anthropomorphism, when used responsibly, can add emotional meaning to the science of animal sentience.

But is there a distinction to be made between sentient species? After all, we are animals. Yet, humans differentiate ourselves from other types of animals. Our culture, and the taxonomies our fields of study rely on, demand categorizations of nature. But nature is not so obedient.

Research indicates that sentience extends to a wide range of animals. For example, chimps have been found to be generous, mice have exhibited empathy and honeybees have demonstrated pessimism. But because of the limits of human perception, we don't have sufficient ways to measure just how sentient non-human species are. It likely isn't a clear-cut answer of sentient or not sentient, but shades of grey.

Currently, most of the research on animal sentience has focused on vertebrate species and been mammal-centric. It is generally accepted that vertebrates (with the disputable exception of fish) are sentient, and that invertebrates are less-so. These evolving distinctions have made nonhuman personhood protections a messy legal area.

Admittedly, humans have something these other sentient beings apparently do not: The cognitive ability to create complex cultures which have allowed us to conceive of and communicate a claim of rights. But, as environmental researcher Uta Maria Juergens has argued, "If we pride ourselves on our unique intellect, we ought to also pride ourselves on assuming the responsibility that comes with it."