Saturday, July 3, 2021

Solving a long-standing mystery about the desert's rock art canvas

Petroglyphs are carved in a material called rock varnish, the origins of which have been debated for years. Now, scientists argue it's the result of bacteria and an adaptation that protects them from the desert sun's harsh rays.

from Latest Science News -- ScienceDaily https://ift.tt/3qJgMFy
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Scientists say most people need more protein than current guidelines suggest

A new review suggests that doing more exercise and eating more protein than current minimum recommendations may help people stay stronger, s...