Scientists: Grizzlies expand turf but still need protection

BILLINGS, Mont. (AP) — Grizzly bears are slowly expanding the turf where they roam in parts of the northern Rocky Mountains but need continued protections, according to government scientists who concluded that no other areas of the country would be suitable for reintroducing the fearsome predators. The Fish and Wildlife Service on Wednesday released its…

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Scientists identify virus-cell interaction that may explain COVID-19’s high infection rate

Bioengineering researchers at Lehigh University have identified a previously unknown interaction between receptors in human cells and the spike, or “S,” protein of SARS-CoV-2, the virus that causes COVID-19. This new information could aid in the development of new strategies to block SARS-CoV-2 entry into human cells.

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