Uncategorized
- Earth
Dioxin Dumps: Burning exposed trash pollutes soil
The practice of burning refuse in the open in many underdeveloped countries creates prodigious quantities of harmful polychlorinated compounds.
- Earth
Clean Casualties: Everyday chemicals may shift ecosystems
Trace amounts of the chemical concoctions used to battle bacteria in kitchens and bathrooms may kill off algae, an effect that researchers say may have far-reaching consequences.
- Animals
Secret Signal: Fish allurement that predators don’t see
In a rare demonstration of secret messaging in animals, a swordtail fish uses ultraviolet courtship signals that are invisible to a predator.
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By a Nose? Human sperm may sniff out the path to an egg
A man's sperm appear to possess a primitive kind of nose that enables them to navigate to a woman's egg by scent.
