Climate
- Earth
Global dimming may mitigate warming, but could hurt crop yields
Injecting a veil of tiny particles into the atmosphere might reduce global warming, but it could also lower crop yields.
- Earth
You’re living in a new geologic age. It’s called the Meghalayan
The newly defined Meghalayan Age began at the same time as a global, climate-driven event that led to human upheavals.
- Oceans
Shallow reef species may not find refuge in deeper water habitats
Coral reefs in deep-water ecosystems may not make good homes for species from damaged shallow reefs.
- Environment
Wildfires are making extreme air pollution even worse in the northwest U.S.
America’s air is getting cleaner — except in places that are prone to wildfires.
- Climate
Bloodflowers’ risk to monarchs could multiply as climate changes
High atmospheric carbon dioxide levels can weaken the medicinal value of a milkweed that caterpillars eat, and high temperatures may make the plant toxic.
- Earth
Earth’s rivers cover 44 percent more land than we thought
A global survey of rivers and streams based on satellite data suggests that these waterways traverse about 773,000 square kilometers.
- Climate
Why won’t this debate about an ancient cold snap die?
Critics are still unconvinced that a comet caused a mysterious cold snap 12,800 years ago.
- Climate
Antarctica has lost about 3 trillion metric tons of ice since 1992
Antarctica’s rate of ice loss has sped up since 1992 — mostly in the last five years, raising global sea level by almost 8 millimeters on average.
- Climate
Tropical cyclones have slowed over the last 70 years
Tropical cyclones are moving 10 percent slower, on average, than they did in the mid-20th century, potentially making them more dangerous.
- Environment
A big analysis of environmental data strengthens the case for plant-based diets
A new study calculates the bonus for the planet of choosing more foods from plants.
- Climate
The first Americans could have taken a coastal route into the New World
Alaskan glaciers retreated in time for ancient coastal entries of the first Americans.
- Paleontology
The Chicxulub asteroid impact might have set off 100,000 years of global warming
About 66 million years ago, the Chicxulub asteroid impact set off 100,000 years of global warming, an analysis of oxygen in fish fossils suggests.
