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 reverse liver cell aging and cut Alzheimer’s-linked protein in half

A surprising discovery suggests that rejuvenating the liver could help protect against Alzheimer’s disease and heart disease. USC researcher...