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Space

Flat spots on Saturn’s moon Titan may be the floors of ancient lake beds

Bright radio signals from Titan indicate the presence of ancient lake beds in its tropics, a new analysis finds.

Health & Medicine

COVID-19 lockdowns helped people get more, but not necessarily better, sleep

Two studies report that people began sleeping more and more regularly after countries imposed stay-at-home orders to slow the coronavirus’ spread.

Animals

Barn owlets share food with their younger siblings in exchange for grooming

Scientists weren’t sure why elder barn owlets would give away meals to their younger kin, a rare example of sibling cooperation in birds.