All Stories by Sid Perkins
- 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.
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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.
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Birds, bats leave different wakes
The aerodynamic tale left behind a bird is different from that left behind a bat.
- Paleontology
Dino feathers may have had earlier origin than thought
Researchers report that newly described dinosaur fossils suggest an ancient origin of feathers.
- Earth
North America’s smallest dino predator
A new fossil analysis uncovers what may have been North America’s tiniest dino predator.
- Earth
Pushing back an oxygen-rich atmosphere
Hematite crystals in Australian rocks hint that Earth’s atmosphere was oxygenated earlier than previously thought.
- Planetary Science
Seeing the future hot spells
Satellite data could help scientists better predict killer heat waves, such as the one that hit Europe in 2003.
- Earth
Effects of the weather, underground
Sudden changes in air temperature in the stratosphere that can ultimately steer major storm systems can also influence the number of subatomic particles slamming into detectors located hundreds of meters below ground, a new study reveals.
- Climate
Chinese carbon dioxide emissions eclipse efficiency gains
A boost in manufacturing and construction in China led to an increase in carbon dioxide emissions that outstripped any gains from increased energy efficiency.
- Tech
Watching Earth for 25 years
The Landsat 5 satellite launched in 1984 with a mission to orbit and image Earth's surface for three years. Still in orbit, the satellite has continuously documented changes in landscape.
- Paleontology
Dinosaur handprints reveal birdlike arm anatomy
Inward-facing palms evolved much earlier than previously recognized, a new study finds.
