Uncategorized
- 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.
- Animals
At last, a bird that nails killer chicks
For the first time, researchers have found a bird species—Australia's superb fairy-wren—that reacts when all its own chicks disappear and a giant imposter takes their place.
