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The sense of smell, it turns out, is highly individual—a scent that is enticingly floral to one person may be off-putting and chemical to another. Researchers in Germany -recently asked 1,227 participants to describe and rate 73 odors and found…

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www.springernature.com/us). Scientific American maintains a strict policy of editorial…

At precisely 2:06 a.m. EDT Saturday (Aug. 23), the moon will enter its new moon phase — something it does every 29.5 days. However, this new moon will have a special title and significance on the calendar. Meet the “black moon.”

It’s not…

Billions of nerve cells send signals coursing through our bodies, serving as conduits through which the brain performs its essential functions. For millennia physicians thought damage to nerves was irreversible. In ancient Greece, founders of…

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe is gravitationally attracting all the other matter in the universe; therefore, the expansion of the universe is slowing.

Two…