Is time real or is it an illusion?

Light exists outside of time.

  • Time can change depending on how fast you're moving through space. Also, time can "flow" at different rates for different observers.
  • Light doesn't experience time — it exists outside of time.
  • We perceive space and time differently, but they may be woven together. For instance, they both balance each other out: If you are still, time goes by at a natural rate. However, if you move through space very fast, time begins to slow down.

Live on Monday: Does the US need one billion people?

What would happen if you tripled the US population? Matthew Yglesias and moderator Charles Duhigg explore the idea on Big Think Live.

Big Think LIVE

Is immigration key to bolstering the American economy? Could having one billion Americans secure the US's position as the global superpower?

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The surprising future of vaccine technology

We owe a lot to vaccines and the scientists that develop them. But we've only just touched the surface of what vaccines can do.

Videos
  • "Vaccines are the best thing science has ever given us," says Larry Brilliant, founding president and acting chairman of Skoll Global Threats. From smallpox, to Ebola, to polio, scientists have successful fought viruses and saved millions of lives. So what's next?
  • As Covaxx (formerly United Neuroscience) cofounder Lou Reese explains in this video, the issue with vaccines is that they don't work against "non-external threats." This is a problem, especially now when internal threats (things that cause cancers, Alzheimer's, diabetes, and other chronic illnesses) are killing people more than external threats like viruses.
  • The future of vaccine tech, which scientists are already working toward today, is developing safe vaccines to eradicate these destructive internal agents without harming our bodies in the process.


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Think everyone died young in ancient societies? Think again

In fact, the maximum human lifespan has barely changed since we arrived.

Photo by Juliet Furst on Unsplash
Surprising Science

You might have seen the cartoon: two cavemen sitting outside their cave knapping stone tools. One says to the other: 'Something's just not right – our air is clean, our water is pure, we all get plenty of exercise, everything we eat is organic and free-range, and yet nobody lives past 30.'

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Mystery anomaly weakens Earth's magnetic field, report scientists

A strange weakness in the Earth's protective magnetic field is growing and possibly splitting, shows data.

ESA
Surprising Science
  • "The South Atlantic Anomaly" in the Earth's magnetic field is growing and possibly splitting, shows data.
  • The information was gathered by the ESA's Swarm Constellation mission satellites.
  • The changes may indicate the coming reversal of the North and South Poles.
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Why social media has changed the world — and how to fix it

MIT Professor Sinan Aral's new book, "The Hype Machine," explores the perils and promise of social media in a time of discord.

Peter Macdiarmid/Getty Images for Somerset House
Technology & Innovation

Are you on social media a lot? When is the last time you checked Twitter, Facebook, or Instagram? Last night? Before breakfast? Five minutes ago?

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