Extras
Animal parents must overcome freshwater’s constant changes.
Animal parents must balance risk and reward to raise their young in grasslands.
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.
James and Helen find themselves scrambling to coordinate their busy schedules.
Tristan and Siegfried find themselves in competition. Mrs. Pumphrey prepares Tricki for a visitor.
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
As Trump expands presidential power, Congress divided over how much authority to cede
News Wrap: World leaders weigh whether to join Trump's 'Board of Peace' for Gaza
Amy Walter and Jasmine Wright on Trump's control of GOP lawmakers
On board the voyage to Antarctica to learn why a massive glacier is melting
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