Newly released footage shows a close encounter between a diver and an already famous 20-foot-long great white.
An ecological impact study on the creatures suggests
reintroducing them to the mainland could make it a new apex predator
above foxes and feral cats.
Some animals, a very few, recognize themselves in mirrors.
Others, though, have less predictable reactions, based on type of
animal. Trace explains "the mirror test" and looks at how some different
creatures react.
Which came first: mountains or the creatures on them?
Research on a tropical mountain paradise in Borneo helps answer that
riddle.
Tadpoles from six countries, in both tropical and temperate locations, test positive for a disease-causing parasite.
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