Uncategorized
- Materials Science
Quick-Change Surface: Material repels water on command
Researchers have modified a gold surface so that it switches from a water-attracting mode to a water-repelling one on command.
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Testosterone’s Family Ties: Hormone-linked problems reflect parent-child bond
Low or high concentrations of the hormone testosterone may contribute to delinquency and depression mainly in children who have poor relationships with their parents.
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Getting Attached: Sugar-protein link joins embryo to Mom
Biologists may have found the molecular handshake that attaches an embryo to the wall of the uterus.
- Animals
Retaking Flight: Some insects that didn’t use it didn’t lose it
Stick insects may have done what biologists once thought was impossible: lose something as complicated as a wing in the course of evolution but recover it millions of years later.
