All Stories by Sid Perkins
- Earth
A limit for carbon emissions: 1 trillion metric tons
To reduce risks of severe damage from climate change, humans should burn no more than 1 trillion tons of carbon in total, researchers suggest.
- Plants
Climatic effects of tree-killing hurricanes
A new analysis suggests storm damage returns millions of metric tons of carbon dioxide to the atmosphere each year.
- Earth
A little air pollution boosts vegetation’s carbon uptake
Aerosols bumped up world’s plant productivity by 25 percent in the 1960s and 1970s, new research suggests.
- Life
Fossil evidence for a Goldilocks tyrannosaur
A newly described species of tyrannosaur helps fill in details about the fearsome meat-eating dinosaurs.
- Planetary Science
Antarctic ecosystem holds unusual microbes
Long isolated deep under a glacier, life thrives in dark, salty water by breathing iron and eating sulfates.
- Space
Massive solar flares captured in 3-D
Distance between orbiting STEREO craft allows better imaging of coronal mass ejections.
- Life
Early land arthropods sported shells
Ancient ocean-dwelling arthropods may have worn shells to enable their transition to land.
- Earth
Arctic ice more vulnerable than ever
Ocean’s ice cap is smaller than long-term average and thinnest yet as melt season begins.
- Tech
Urban Heat: Recycling waste heat
In the United States, only about one-eighth of the fuel people burn is converted into useful work. Recycling such wasted heat could be one of the best solutions to problems posted by growing cities.
-
Urban heat
Cities sizzle as more people move in.
- Earth
Tallying emissions in ports and at sea
Ships are major contributors to acid rain and ground-level ozone concentrations in some parts of the world.
-
Birds, bats leave different wakes
The aerodynamic tale left behind a bird is different from that left behind a bat.
