Uncategorized
- Health & Medicine
Malaria’s sweet spot
The malaria parasite's reliance on a sugar in the gut of mosquitoes may offer a way to block the disease's transmission.
- Astronomy
Out-of-focus find
Blurry images yield estimates of the true width of glowing meteor vapor trails in Earth's upper atmosphere.
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19885
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. But optics teaches that any object much farther away than the focal length of the telescope is essentially “at infinity.” Wouldn’t a […]
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