Earth
- Earth
Mangled microfossils may mark impact sites
Scientists studying sediment cores drilled in eastern Virginia say they’ve possibly identified a new clue to the locations of ancient, hidden impact craters: Just look for broken or twisted microbial fossils.
- Earth
Presto, Change-o!
Compared with the snail's-pace processes that normally shape Earth's surface, the impacts of extraterrestrial objects change our planet's geology in a flash.
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- Environment
Old thermometers pose new problems
Though health groups advocate getting mercury thermometers out of the home, obtaining sound advice on how to dispose of the thermometers can be problematic.
- Earth
Algae Turn Fish into a Lethal Lunch
Scientists demonstrated that some marine mammals have died from eating fish tainted with a neurotoxic diatom.
- Earth
Most oil enters sea from nonaccidents
Nearly all of the oil entering the marine environment traces not to accidents but to natural seeps and human activities where releases are intentional.
- Earth
Wretched weather sealed explorer’s fate
Unusually low temperatures hindered Robert Falcon Scott's polar expedition in 1912.
- Earth
Taking a mountain’s measure
A survey of Mount Everest alters its official elevation to 29,035 feet.
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- Earth
Mapping the Frozen Sky: Study looks at clouds from both sides now
By combining simultaneous observations from satellites and ground-based instruments, scientists can generate a three-dimensional map of the size and distribution of ice particles in a cirrus cloud.
- Earth
Smoggy Asian air enters United States
High concentrations of ozone from Asia reach the United States.
- Earth
The Air That’s Up There
Researchers are exploring how trees affect the chemistry of the atmosphere.
