How Biological Clocks Work
Anyone who has traveled has experienced jet lag—that groggy realization that while your day is beginning in Washington, DC, the night you just left in San Francisco is hardly over. Jet lag is an inconvenient reminder that the body is set to a 24-hour clock,…
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Biology
What Gives Hair Its Color?
Put a single hair under a microscope, and you'll see granules of black, brown, yellow, or red pigment. What…
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Yes! We Have New Bananas
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Radon, A Rare Element
To the best of our knowledge, the entire universe is constructed from just over a hundred different types of…
Chemistry
What Is pH?
Anyone who is the least bit familiar with vinegar, nausea, sodium bicarbonate, and ammonia-based cleaning…