Climate
- Earth
Only a third of Earth’s longest rivers still run free
Mapping millions of kilometers of waterways shows that just 37 percent of rivers longer than 1,000 kilometers remain unchained by human activities.
- Archaeology
Ancient South American populations dipped due to an erratic climate
Scientists link bouts of intense rainfall and drought around 8,600 to 6,000 years ago to declining numbers of South American hunter-gatherers.
- Life
1 million species are under threat. Here are 5 ways we speed up extinctions
One million of the world’s plant and animal species are now under threat of extinction, a new report finds.
- Earth
Warm, dry winds may be straining Antarctica’s Larsen C ice shelf
Wind-induced melting that occurred during the Antarctic autumn may be accelerating the Larsen C ice shelf’s collapse, which could raise sea levels.
- Climate
Tiny microplastics travel far on the wind
Airborne bits of plastic that originated in cities ended up in pristine mountains at least 95 kilometers away, a study finds.
- Climate
Climate change made the Arctic greener. Now parts of it are turning brown.
Arctic browning could have far-reaching consequences for people and wildlife, affecting habitat and atmospheric carbon uptake as well as increasing wildfire risk.
- Climate
Antarctica’s iceberg graveyard could reveal the ice sheet’s future
Drilling deep into the seafloor beneath Antarctica’s “Iceberg Alley” could reveal new clues about how quickly the continent has melted in the past.
- Climate
One Antarctic ice shelf gets half its annual snowfall in just 10 days
Antarctica’s coasts get most of their snow from just a few big storms each year.
- Climate
Students worldwide are striking to demand action on climate change
On March 15, students are set to attend more than 1,000 events to demand that governments do more to rein in greenhouse gas emissions.
- Climate
What happens when the Bering Sea’s ice disappears?
Record-low sea ice in 2018 sent ripples through the Bering Sea’s entire ecosystem. Will this be the region’s new normal?
- Oceans
Oceans that are warming due to climate change yield fewer fish
Warming water due to climate change is diminishing sustainable fishery yields in the world’s oceans.
- Climate
Dueling dates for a huge eruption reignite the debate over dinosaurs’ death
New dating techniques for the Deccan Traps volcanic eruptions disagree on whether they were the main culprit in the dinosaurs’ demise.
