Uncategorized
- Astronomy
Dawn of a Disk: Water vapor pours down on embryonic star
Infrared observations show water vapor pouring down on a planet-forming disk around a young star.
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No-Fight Zones: School programs reduce violence in all grades
A variety of school-based programs succeed in reducing students' violent and disruptive behavior.
- Earth
Oxygen Rocks: Volcanoes spurred early atmospheric change
Earth owes its oxygen-rich atmosphere to a change in volcanic activity about 2.5 billion years ago.
- Plants
Cretaceous Corsages? Fossil in amber suggests antiquity of orchids
Orchids appeared on the scene about 80 million years ago, according to evidence from a bee that collected orchid pollen and got trapped in amber.
