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EcosystemsPrairie Revival
Prairie restoration is attracting interest, but because so little long-term monitoring and comparative studies have been done, researchers are still wondering whether it's really possible to re-create a prairie.
By Leslie Allen -
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HumansLetters from the December 15, 2007, issue of Science News
Fuzzy logic Astronomer Masanori Iye of the National Observatory of Japan blames the blurry appearance of meteor trails at about 100 kilometers altitude on the fact that they were photographed with telescopes focused at infinity (“Out-of-focus find,” SN: 9/29/07, p. 205). But optics teaches that any object much farther away than the focal length of […]
By Science News -
HumansFrom the December 4, 1937, issue
The perfect beauty of frost rime, the sun's surprising influence on earth, and digging up evidence of ancient domestic cats.