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| "Extreme" rain follows global warming Thu, 07 Aug 2008 14:30:00 EST |
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Heavy rain is coming unexpectedly more often as global warming continues, researchers say.
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| Dolphins and the evolution of teaching Thu, 07 Aug 2008 14:12:00 EST |
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Some dolphins seem to teach their young to forage, by repeating actions many times and "pointing" at things, scientists report.
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| Martian salt not bad for life: scientists Wed, 06 Aug 2008 11:54:00 EST |
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A finding of perchlorate salts is leading researchers to "reassess" the planet's habitability.
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| Nature's mightiest bites calculated Mon, 04 Aug 2008 13:27:00 EST |
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The great white shark has the hardest bite of any living species known -- yet it's a mere nibble compared to that of an extinct shark, a study finds.
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| U.S. understated HIV infection rate Sat, 02 Aug 2008 21:06:00 EST |
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Many more Americans pick up the AIDS virus yearly than past official estimates showed, authorities said.
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