Watch these robotic fish swim to the beat of human heart cells
Tiny, robotic fish powered by human heart cells suggest that scientists are getting closer to their goal of building replacement hearts from living tissue.
Science
Scientist Luc Montagnier, who discovered the virus that causes AIDS, is dead at 89
Luc Montagnier, the scientist who discovered the virus that causes AIDS, has died at 89. His key contribution came at a time when AIDS was mysterious and uniformly deadly.
How dairy farmers are cashing in on California's push for cleaner fuel
Big dairy farms are profiting from California's tougher limits on greenhouse emissions. They're getting paid to capture methane from cow manure. But critics say the system subsidizes polluters.
Our roads are killing wildlife. The new infrastructure law aims to help
For the first time, the federal government is making a sizeable investment in wildlife road crossings. The goal is to help slow extinctions, and also protect people from animal collisions.
Take a look at SARS-CoV-2's family tree. It's full of surprises
The family history of SARS-CoV-2 is not what virologists expected — and it sheds light on the coronavirus that launched a pandemic. Check out our illustration of the virus's family tree.
Coal-dependent West Virginia eliminates ban on nuclear power
The state's ban on nuclear plants was enacted in 1996, but nuclear power has gained support as a tool to keep climate change under control and other states are transitioning away from fossil fuels.
Scientist says state governments are lifting mask mandates prematurely
NPR's Adrian Florido talks with Mercedes Carnethon, vice chair of the Department of Preventive Medicine at Northwestern University, on whether local governments lifting mask mandates is science-based.
How to build a fire inside, according to Neanderthals
Early humans seemed to strike the perfect balance in situating their hearths in the cave, preserving ample sitting and cooking space while avoiding the worst effects of smoke.
Top White House science adviser announces resignation after reports of bullying
Eric Lander tendered his letter of resignation hours after a Politico article reported that the White House had found that he bullied and demeaned his subordinates.
Corporate climate pledges are weaker than they seem, a new study reports
Many companies mislead by using accounting practices that make their environmental goals relatively meaningless or exclude parts of their businesses in their calculations, NewClimate Institute finds.