Earth
- Earth
Eddies in the deep Earth
The flow of molten material in our planet's outer core is the prime source of Earth's magnetic field. Localized blips in the magnetic field suggest this flow can fluctuate rapidly over large areas.
- Earth
Froggie Needs a Name – and Help
To help raise awareness about the plight of frogs and toads, which are disappearing globally, Amphibian Ark is selling formal naming rights to an unusual frog.
- Climate
Boreal forests shift north
As forests move northward and to higher elevations, they alter ecosystems and threaten to further heat the Arctic's already warming climate.
- Animals
Polar bears listed
Polar bear declared "threatened," but Secretary limits decision's impact.
- Earth
Climate clues in ice
A kilometers-long ice core from Antarctica has been recording climate information for the past 800,000 years and has revealed a three millennia–long period when carbon dioxide levels in the air were lower than any previously measured.
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- Health & Medicine
Pollution and blood clots
Inhaling tiny pollution particles, even at concentrations allowed in urban air, appears to increase the risk that an individual’s veins will develop potentially lethal blood clots.
- Earth
Emissions head north
When it comes to Arctic air, various regions of the Northern Hemisphere are equal opportunity polluters. Even some subtropical countries in southern Asia get into the act.
- Humans
Scientific Interference: Complaints At EPA
Results from a survey of more than 1,500 EPA scientists suggest a systematic attack on scientific integrity within that agency.
- Climate
A little drier every day
The Sahara, one of the hottest and driest regions on Earth, gradually became arid over a period of centuries, a finding that contradicts many previous studies.
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- Health & Medicine
Perchlorate: A Saga Continues
Perchlorate is not yet a household word in many parts of the country. But it may becomes one if Sen. Barbara Boxer has her way. Perchlorate – an ingredient in solid rocket fuel, fireworks, flares and explosives – taints drinking-water supplies around the nation, not to mention plenty of foods. In animal tests, the pollutant […]
