5,522 results
5,522 results for: Forests
- Climate
Wildfires in boreal forests released a record amount of CO2 in 2021
Boreal forests store about one-third of the world’s land-based carbon. With wildfires increasing there, fighting climate change could get even harder.
- Paleontology
‘Thunder beast’ fossils show how some mammals might have gotten big
Rhinolike mammals called brontotheres repeatedly evolved into bigger and smaller species, a fossil analysis shows. The bigger ones won out over time.
- Archaeology
How Asia’s first nomadic empire broke the rules of imperial expansion
New studies reveal clues to how mobile rulers assembled a multiethnic empire of herders known as the Xiongnu more than 2,000 years ago.
- Animals
Volcanic sulfur may make barn owls grow redder feathers
Barn owls on volcanic islands tend to have redder plumage than those on nonvolcanic islands, possibly due to an influx of sulfur in the environment.
- Climate
The summer of 2021 was the Pacific Northwest’s hottest in a millennium
Tree ring data from the Pacific Northwest reveal that the region’s average summer temperature in 2021 was the highest since at least the year 950.
- Life
Chemical signals from fungi tell bark beetles which trees to infest
As fungi break down defensive chemicals in trees, some byproducts act as signals to bark beetle pests, telling them which trees are most vulnerable.
- Environment
Satellite imagery reveals ‘hidden’ tornado tracks
Twisters that churn over barren landscapes leave scars that are invisible to human eyes but are detectable with infrared light.
- Tech
A trick inspired by Hansel and Gretel could help rovers explore other worlds
Taking a cue from a classic fairy tale, scientists propose a way for rovers to send back data from treacherous terrain.
- Animals
The last leg of the longest butterfly migration has now been identified
After a long journey across the Sahara, painted lady butterflies from Europe set up camp in central Africa to wait out winter and breed.
- Climate
How an Indigenous community in Panama is escaping rising seas
The Indigenous Guna peoples' relocation from Panama could offer lessons for other communities threatened by climate change.
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- Paleontology
The oldest known pollen-carrying insects lived about 280 million years ago
Pollen stuck to fossils of earwig-like Tillyardembia pushes back the earliest record of potential insect pollinators by about 120 million years.
