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- SCIENTIFIC AMERICANA DAY AGO

Earth's rocks have a missing layer spanning up to a billion years. Scientists finally know what happened to it
The 'Great Unconformity' has puzzled scientists since its discovery in the 1870s
- SCIENTIFIC AMERICANA DAY AGO

NASA reveals new lunar rover, PROMISE, to launch to moon in 2028
At a press event on Saturday, the agency's officials stressed that rovers and other infrastructure will be critical to ensuring human survival on the moon
- SCIENTIFIC AMERICAN11 HOURS AGO

Why do some people hear pitch better than others? Internal noise may be the key
The less internal noise you have, the more reliably you can tell similar sounds apart
- SCIENTIFIC AMERICAN12 HOURS AGO

Acorns—not deer—can predict a rise in Lyme-spreading ticks
Despite deer's essential role in tick reproduction, looking to acorn numbers instead can forecast Lyme disease booms almost two years in advance