My namesake at work. on a macro project.
Wow, who'd a thunk it?
I once heard an Oklahoman arguing with a Texan over which state was better; after awhile, the Texan got mad and said that Texas dirt could grow anything and Oklahoma dirt couldn't grow 'nothing'; the guy from Oklahoma, never missing a beat, shot back: "No wonder, it was all up here before the dust storms blew it down there!"
The Amazonian rainforest depends on Saharan dust for many of its nutrients, including iron and phosphorus.* "If it weren't for those nutrients, the Amazon would be a wet desert," says Ilan Koren, an atmospheric scientist at the Weizmann Institute in Rehovot, Israel.Note: this topic is from two years ago -- 2006.
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So when the Sahara was wet, was the Amazon basin dry?
Evolution in Your FaceLake Victoria, Africa's largest lake, is home to more than 300 species of cichlids. These fish, which are popular in aquariums, are deep-bodied and have one nostril, rather than the usual two, on each side of the head. Seismic profiles and cores of the lake taken by a team headed by Thomas C. Johnson of the University of Minnesota, reveal that the lake dried up completely about 12,400 years ago. This means that the rate of speciation of cichlid fishes has been extremely rapid: something on average of one new species every 40 years!
by Patrick Huyghe
Omni
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Note: this topic is from 2006. |
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