Top news for December 21, 2008

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Pregnant Women Get Conflicting Advice on Covid-19 Vaccines

Engineers Create Tiny Threads That Sense How and When You Move in Real-Time

High-speed holographic fluorescence microscopy system with submicron resolution

The Most Worrying Mutations in Five Emerging Coronavirus Variants

Earth's outer shell ballooned during massive growth spurt 3 billion years ago

Earth is about to lose its second moon, forever

Specific bacteria in the gut prompt mother mice to neglect their pups

28 Trillion Tonnes of Ice Have Melted Since 1994, on Track With Worst-Case Scenarios

Health Care Unions Find a Voice as the Pandemic Rages

Thick lithosphere casts doubt on plate tectonics in Venus's geologically recent past