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02.08.10 News
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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.
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Nature
Moths Catch the Wind to Speed Migration
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Can Thin Mountain Air Make You Slim?
New Scientist
The Secret of a Sperm's Wiggle
Science News
Pluto Blushes Red
PNAS
Uncovering Camouflage
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Sea Turtles
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Research Finds Water Movements Can Shape Fish Evolution
Researchers have found that the hydrodynamic environment of fish can shape their physical form and swimming style.
Prion Leaves Lasting Mark on Memory
Researchers suggest that a prion-like protein may participate in memory in higher eukaryotes, from sea slugs on up.
'Zen' Bats Hit Their Target by Not Aiming at It
New research suggests that Egyptian fruit bats find their target by aiming their guiding sonar to either side of their target.
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Why Some Animals Glow
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.
