On the National Mall, in the heart of Washington, D.C., Americans expressed their pride, concern and hopes for the country as it turns 250 years old. An observatory in Chile is taking a timelapse of ...
July 3, 2026 Scientists at UCLA discovered a surprising reason aging muscles heal more slowly. In older muscle stem cells, a protein called NDRG1 builds up and acts like a brake, slowing the cells’ ...
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