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First Discovery of the Female Hormone Progesterone in a Plant

Scientists have discovered the female sex hormone progesterone in a walnut tree, shaking up what's known about the different between plants and animals. Until now, scientists thought that only animals could make progesterone. A steroid hormone secreted by the ovaries, progesterone prepares the uterus for pregnancy and maintains pregnancy. A synthetic version, progestin, is used in birth control pills and other medications. More
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Nature_020510 Nature
Moths Catch the Wind to Speed Migration
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Science_020410 Science
Can Thin Mountain Air Make You Slim?
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New Scientist_020510 New Scientist
The Secret of a Sperm's Wiggle
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Science News_020510 Science News
Pluto Blushes Red
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PNAS_020410 PNAS
Uncovering Camouflage
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