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3 ways quantum computing can help us fight climate change
There's a lot we can do with current technology to help stem the tide of climate change, but future technology may help even more.
- Part of what makes fighting climate change so hard is that solutions take years or even decades to develop.
- Meanwhile, the amount of CO2 already in the atmosphere means that climate change has momentum on its side, and its effects are already being felt.
- However, quantum computing would represent a breakthrough that could cut down on the time needed to research and develop solutions exponentially, turning the work of decades into years or less.
Without a doubt, climate change is the most pressing and complicated challenge that humanity collectively faces. Dealing with it appropriately will require a lot—we'll need to change our lifestyles to put less stress on the planet, consume more conscientiously, and more diligently preserve species diversity. But we may be able to innovate our way out of this terrific mess we've found ourselves in. One way to do that would be to make scalable, efficient quantum computers.
Developing quantum computing capacities at a scale similar to modern computers or even supercomputers could enable us to solve many of the intractable problems that climate change poses to us. Here's how.
What is quantum computing?
At the fundamental level, classical computers use bits to operate, simple pieces of binary information that can have two values: 0 or 1. Quantum computers take advantage of quantum particles' weird ability to exist in several states simultaneously. Rather than represent a 0 or 1, a "qubit" can exist as both simultaneously.
Imagine you have four bits. Together, those four bits can have one of 16 possible combinations, such as 1011. Four qubits, however, can be in all 16 combinations at once. As more qubits get involved, these potential values grow exponentially, meaning that our computing power grows exponentially as well.
There's quite a bit more involved, but the important thing to know is that quantum computers absolutely smoke classical computers when solving complicated problems. Some problems exist that would take a classical computer literally millions of years to solve that a quantum computer could solve in days or less. Solving these problems are the ones that are going to help us address climate change.
1. Deploying better CO2-scrubbing compounds
The Intergovernmental Panel on Climate Change (IPCC) has stated that cutting CO2 emissions isn't enough to stop climate change; we'll need to remove the CO2 that's already in the atmosphere. To a large extent, we can accomplish this by planting more trees, but this isn't a perfect solution. Trees take a long time to grow (and sequester carbon in so doing), can be prone to fires (which will become more common as the Earth warms), and are tempting targets for logging (which emits CO2).
Using chemical catalysts to capture CO2 for storage or to convert it into useful products is one way to overcome this. But existing catalysts tend to be made of expensive materials or are difficult to deploy. It'd be a huge step if we could identify cheaper, easier-to-make compounds that can scrub CO2 from the atmosphere more effectively.
But here, we run into a problem. Accurately simulating chemical compounds takes a lot of processing power. Every atom added to a compound makes simulation exponentially more difficult, requiring us to use our best guesses in a tedious trial and error process instead. Currently, quantum computers can simulate simple compounds with a few dozen qubits. Experts claim that if we could scale that up to around a million qubits, we would likely be able to simulate the compounds that are likely to be more effective at capturing CO2.
2. Developing better batteries
IBM's Q System One quantum computer.
Misha Friedman/Getty Images
Almost every aspect of renewable energy technology is mature enough to replace traditional fossil fuels right now, save for one major stumbling block: battery technology. Fossil fuels function as a stable store by themselves, ready to undergo combustion to release the energy stored in gasoline or coal. But the pure electricity generated from solar energy or the turning of wind turbines needs to be stored somewhere, especially since the wind isn't always blowing and the sun isn't always shining.
Current batteries, however, are too expensive to implement at the scale needed to store the world's energy needs, and they don't store energy long enough. Like CO2-scrubbing catalysts, advances in battery technology are made through physical prototyping and testing. Using a quantum computer to simulate the complicated chemistry that hypothetically better batteries would employ would make this process many, many times faster.
This approach has attracted significant attention since batteries are such a widely used commodity. One notable example of first-movers in this arena is Mercedes-Benz, who has partnered with IBM's quantum computing program in order to build better batteries for electric cars.
3. Modeling the Earth's climate
The Earth's climate is an enormously complicated system with numerous sensitive components that interact with one another. Our current understanding of climate change is the result of decades of modeling work from thousands of researchers, and thanks to that work, we know what components of the Earth's climate system pose the greatest risk, what we need to focus on, and when we need to act.
Understanding the climate informs our strategy and enables us to make better forecasts. At 2018's SXSW conference, tech entrepreneur William Hurley suggested that quantum computing's exponentially superior computing power could be used to model the many, many variables that go into the Earth's climate system.
There are many more known applications of quantum computing that could benefit us in our fight against climate change. Odds are, there's even more unknown applications that we'll only discover once we begin playing around with this new technology.
It's the ultimate technologist's dream — a quantum leap that suddenly renders seemingly insurmountable challenges negligible. It's important to remember, however, that we can't put all our eggs in one basket. We can't rest easy on the gamble that quantum computers will both mature quick enough and work effectively enough to solve every climate problem we've made for ourselves.
Addressing real-world challenges requires a mix innovation and adaptation. We need to develop better tools, faster computers, and more effective solutions as well as learn how to live with what has been allotted to us, to treat our environment more gently, and preserve the only planet we've got.
- Quantum computing is on the way - Big Think ›
- Google to Achieve "Supremacy" in Quantum Computing by the End ... ›
A Harvard professor's study discovers the worst year to be alive.
- Harvard professor Michael McCormick argues the worst year to be alive was 536 AD.
- The year was terrible due to cataclysmic eruptions that blocked out the sun and the spread of the plague.
- 536 ushered in the coldest decade in thousands of years and started a century of economic devastation.
The past year has been nothing but the worst in the lives of many people around the globe. A rampaging pandemic, dangerous political instability, weather catastrophes, and a profound change in lifestyle that most have never experienced or imagined.
But was it the worst year ever?
Nope. Not even close. In the eyes of the historian and archaeologist Michael McCormick, the absolute "worst year to be alive" was 536.
Why was 536 so bad? You could certainly argue that 1918, the last year of World War I when the Spanish Flu killed up to 100 million people around the world, was a terrible year by all accounts. 1349 could also be considered on this morbid list as the year when the Black Death wiped out half of Europe, with up to 20 million dead from the plague. Most of the years of World War II could probably lay claim to the "worst year" title as well. But 536 was in a category of its own, argues the historian.
It all began with an eruption...
According to McCormick, Professor of Medieval History at Harvard University, 536 was the precursor year to one of the worst periods of human history. It featured a volcanic eruption early in the year that took place in Iceland, as established by a study of a Swiss glacier carried out by McCormick and the glaciologist Paul Mayewski from the Climate Change Institute of The University of Maine (UM) in Orono.
The ash spewed out by the volcano likely led to a fog that brought an 18-month-long stretch of daytime darkness across Europe, the Middle East, and portions of Asia. As wrote the Byzantine historian Procopius, "For the sun gave forth its light without brightness, like the moon, during the whole year." He also recounted that it looked like the sun was always in eclipse.
Cassiodorus, a Roman politician of that time, wrote that the sun had a "bluish" color, the moon had no luster, and "seasons seem to be all jumbled up together." What's even creepier, he described, "We marvel to see no shadows of our bodies at noon."
...that led to famine...
The dark days also brought a period of coldness, with summer temperatures falling by 1.5° C. to 2.5° C. This started the coldest decade in the past 2300 years, reports Science, leading to the devastation of crops and worldwide hunger.
...and the fall of an empire
In 541, the bubonic plague added considerably to the world's misery. Spreading from the Roman port of Pelusium in Egypt, the so-called Plague of Justinian caused the deaths of up to one half of the population of the eastern Roman Empire. This, in turn, sped up its eventual collapse, writes McCormick.
Between the environmental cataclysms, with massive volcanic eruptions also in 540 and 547, and the devastation brought on by the plague, Europe was in for an economic downturn for nearly all of the next century, until 640 when silver mining gave it a boost.
Was that the worst time in history?
Of course, the absolute worst time in history depends on who you were and where you lived.
Native Americans can easily point to 1520, when smallpox, brought over by the Spanish, killed millions of indigenous people. By 1600, up to 90 percent of the population of the Americas (about 55 million people) was wiped out by various European pathogens.
Like all things, the grisly title of "worst year ever" comes down to historical perspective.
A machine learning system lets visitors at a Kandinsky exhibition hear the artwork.
Have you ever heard colors?
As part of a new exhibition, the worlds of culture and technology collide, bringing sound to the colors of abstract art pioneer Wassily Kandinsky.
Kandinsky had synesthesia, where looking at colors and shapes causes some with the condition to hear associated sounds. With the help of machine learning, virtual visitors to the Sounds Like Kandinsky exhibition, a partnership project by Centre Pompidou in Paris and Google Arts & Culture, can have an aural experience of his art.
An eye for music
Kandinsky's synesthesia is thought to have heavily influenced his painting. Seeing yellow summoned up trumpets, evoking emotions like cheekiness; reds produced violins portraying restlessness; while organs representing heavenliness he associated with blues, according to the exhibition notes.
Virtual visitors are invited to take part in an experiment called Play a Kandinsky, which allows them to see and hear the world through the artist's eyes.
Kandinsky's synesthesia is thought to have heavily influenced his 1925 painting Yellow, Red, Blue.Image: Guillaume Piolle/Wikimedia Commons
In 1925, the artist's masterpiece, "Yellow, Red, Blue", broke new ground in the world of abstract art, guiding the viewer from left to right with shifting shapes and shades. Almost a century after it was painted, Google's interactive tool lets visitors click different parts of the artwork to journey through the artist's description of the colors, associated sounds and moods that inspired the work.
But Google's new toy is not the only tool developed to enhance the artistic experience.
Artist Neil Harbisson has developed an artificial way to emulate Kandinsky by turning colors into sounds. He has a rare form of color blindness and sees the world in greyscale. But a smart antenna attached to his head translates dominant colors into musical notes, creating a real-world soundtrack of what's in front of him. The invention could open up a new world for people who are color blind.
A new study suggests that private prisons hold prisoners for a longer period of time, wasting the cost savings that private prisons are supposed to provide over public ones.
- Private prisons in Mississippi tend to hold prisoners 90 days longer than public ones.
- The extra days eat up half of the expected cost savings of a private prison.
- The study leaves several open questions, such as what affect these extra days have on recidivism rates.
The United States of America, land of the free, is home to 5 percent of the world's population but 25 percent of its prisoners. The cost of having so many people in the penal system adds up to $80 billion per year, more than three times the budget for NASA. This massive system exploded in size relatively recently, with the prison population increasing by six-fold in the last four decades.
Ten percent of these prisoners are kept in private prisons, which are owned and operated for the sake of profit by contractors. In theory, these operations cost less than public prisons and jails, and states can save money by contracting them to incarcerate people. They have a long history in the United States and are used in many other countries as well.
However, despite the pervasiveness of private contractors in the American prison system, there is not much research into how well they live up to their promise to provide similar services at a lower cost to the state. The little research that is available often encounters difficulties in trying to compare the costs and benefits of facilities with vastly different operations and occasionally produces results suggesting there are few benefits to privatization.
A new study by Dr. Anita Mukherjee and published in the American Economic Journal: Economic Policy joins the debate with a robust consideration of the costs and benefits of private prisons. Its findings suggest that some private prisons keep people incarcerated longer and save less money than advertised.
The study focuses on prisons in Mississippi. Despite its comparatively high rate of incarceration, Mississippi's prison system is very similar to that of other states that also use private prisons. Demographically, its system is representative of the rest of the U.S. prison system, and its inmates are sentenced for similar amounts of time.
The state attempts to get the most out of its privatization efforts, as a 1994 law requires all contracts for private prisons in Mississippi to provide at least a 10 percent cost savings over public prisons while providing similar services. As a result, the state seeks to maximize its savings by sending prisoners to private institutions first if space if available.
While public and private prisons in Mississippi are quite similar, there are a few differences that allow for the possibility of cost savings by private operators — not the least of which is that the guards are paid 30 percent less and have fewer benefits than their publicly employed counterparts.
The results of privatization
The graph depicts the likelihood of release for public (dotted line) vs. private (solid line) prison inmates. At every level of time served, public prisoners were more likely to be released than private prisoners.Dr. Anita Mukherjee
The study relied on administrative records of the Mississippi prison system between 1996 and 2013. The data included information on prisoner demographics, the crimes committed, sentence lengths, time served, infractions while incarcerated, and prisoner relocation while in the system, including between public and private jails. For this study, the sample examined was limited to those serving between one and six years and those who served at least a quarter of their sentence. This created a primary sample of 26,563 bookings.
Analysis revealed that prisoners in private prisons were behind bars for four to seven percent longer than those in public prisons, which translates to roughly 85 to 90 extra days per prisoner. This is, in part, because those in private prison serve a greater portion of their sentences (73 percent) than those in public institutions (70 percent).
This in turn might be due to the much higher infraction rate in private prisons compared to public ones. While only 18 percent of prisoners in a public prison commit an infraction, such as disobeying a guard or possessing contraband, the number jumps to 46 percent in a private prison. Infractions can reduce the probability of early release or cause time to be added to a sentence.
It's unclear why there are so many more infractions in private prisons. Dr. Mukherjee suggests it could be the result of "harsher prison conditions in private prisons," better monitoring techniques, incentives to report more of them to the state before contract renewals, or even a lackadaisical attitude on the part of public prison employees.
What does all this cost Mississippi?
The extra time served eats 48 percent of the cost savings of keeping prisoners in a private facility. For example, it costs about $135,000 to house a prisoner in a private prison for three years and $150,000 in the public system. But longer stays in private prisons reduce the savings from $15,000 to only $7,800.
As Dr. Mukherjee remarks, this cost is also just the finance. Some things are a little harder to measure:
"There are, of course, other costs that are difficult to quantify — e.g., the cost of injustice to society (if private prison inmates systematically serve more time), the inmate's individual value of freedom, and impacts of the additional incarceration on future employment. Abrams and Rohlfs (2011) estimates a prisoner's value of freedom for 90 days at about $1,100 using experimental variation in bail setting. Mueller-Smith (2017) estimates that 90 days of marginal incarceration costs about $15,000 in reduced wages and increased reliance on welfare. If these social costs were to exceed $7,800 in the example stated, private prisons would no longer offer a bargain in terms of welfare-adjusted cost savings."
It is possible that the extra time in jail provides benefits that counter these costs, such as a reduced recidivism rate, but this proved difficult to determine. Though it was not statistically significant, there was some evidence that the added time actually increased the rate of recidivism. If that's true, then private prisons could be counterproductive.