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- Humans
Letters 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 […]
- Humans
From 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.
- Earth
Water Vapor by Any Other Name
One can learn a lot by studying clouds—or just relax and soak in their beauty.
