Top news for 2021-04-09

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Quick guide: Most widely used COVID-19 vaccines and how they work

Pillar of support: Breakthrough discovery could speed up bone implant recovery

Shedding more light on molecules linked to life on other planets

NASA’s Mars Helicopter to Make First Flight Attempt Sunday

Cancer-killing virus therapy shows promise against inoperable skin cancers

Earth’s Deep Crust Mineralogy Drives Hotspots for Intraterrestrial Life

Ancient Cave Artists May Have Knowingly Deprived Themselves of Oxygen to Paint

Childhood diet and exercise creates healthier, less anxious adults

Helicopter on Mars! NASA webcast teaches kids about Ingenuity's upcoming 1st flight

A pigment from red cabbage could help turn your favorite foods blue