Science of the Union.
We spoke to candidates with science backgrounds from across the political spectrum
The change between 2011 and 2018 is stark.
Chase the sun somewhere fun.
Popular Science is inside the U.N., where 150 heads of state are talking global warming. Will they put momentum behind an international treaty in 2015?
Addressing the American Geophysical Union, James Hansen urges fellow scientists to study, share facts on nuclear energy
Why would a petro-state erect a solar-powered eco-metropolis in the middle of the Arabian desert? To change the world.
Green technology is on the rise, but the U.S. still consumes an enormous amount of fossil fuels
A century of agricultural innovation vastly increased the amount of food--but with it came an increased population, and now hunger is on the rise. Fixing it will require an unlikely alliance
In the global race to reduce carbon emissions, these eco-minded communities, from Kansas to the Maldives, lead the pack. Here's how they're making their carbon footprints disappear
The most complex machines ever built don't just hunt for obscure subatomic bits
New technology produces energy from fuel without burning it
Simple organisms pave the way to the hydrogen-fueled future
Not bad for a microbe
A 21st century electric-car revival is under way. But the first challenge—building a cheap, safe, powerful battery—is the hardest
Looking for a clean fuel that grows anywhere, needs only sunlight and water, and could produce enough oil to free the U.S. from its petroleum addiction? Here´s one start-up's plan for converting oil from algae-yes, algae
A radical new power plant aims to convert our dirtiest fossil fuel into clean-burning hydrogen