Mysterious “leopard spots” on a Martian rock could be evidence of extraterrestrial life—or of mere lifeless chemistry. Finding out the truth may require bringing the rock back to Earth
Flaws in the CDC's H5N1 test highlight the risks of relying on a single test supplier, some experts say
Hundreds of thousands of people die from extreme temperatures every year, more than any other type of weather disaster
Japanese honeybees use their wings to slap back ants trying to invade their hive
It’s possible to see celestial objects during the day, but it’s not always easy
The basic notes, rests and harmonies of Western music arose as humans heard how sounds traveled through the first large temples, built more than 2,000 years ago
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