All Stories by Sid Perkins
- 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.
- Life
New stegosaur is quite a stretch
A newly discovered stegosaur has neck proportions like those of sauropods.
- Physics
Physics could unite plankton
Oceanic version of wind shear can disorient marine microorganisms and trigger formation of thin, densely populated layers.
- Climate
Hot carbon storage
New field studies show Africa’s tropical forests have stored carbon in recent decades.
- Climate
Plumes of arctic haze traced to Russia, Kazakhstan
Smoke from forest fires, agricultural burning may be substantial part of springtime plumes.
