Top news for 2020-12-23

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The New Covid Variant in the UK: Questions and Answers

Why Experts Think Travel Bans Won't Stop Coronavirus Variant Spread

Christmas trees can be green because of a photosynthetic short-cut

On This Day In Space: May 25, 2008: NASA's Phoenix spacecraft lands on Mars

Devastating Impact of Caspian Crisis: Sinking Sea Levels Threaten Biodiversity, Economy and Regional Stability

Forbes Favorites 2020: The Year’s Best Non-Pandemic Healthcare Stories

These science claims from 2020 could be big news if confirmed

Quantum wave in helium dimer filmed for the first time

Capturing 40 years of climate change for an endangered Montana prairie

Coronavirus outbreak: Live Updates