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New discoveries are bringing the world of pterosaurs to life
The latest clues hint at where pterosaurs — the first vertebrates to fly — came from, how they evolved, what they ate and more.
- Life
Swarming locusts can deploy a chemical to avoid being cannibalized
Releasing a “don’t-eat-me” pheromone signals a locust has become a toxic treat. The finding could lead to new ways to control destructive swarms.
- Health & Medicine
The U.S. COVID-19 public health emergency is ending. What does that mean?
The declaration, made early in the pandemic, made tests, vaccines and treatments free to all. On May 11, the proclamation ends.
