Squirrels, bees could get US aid but not Yellowstone's bison

U.S. wildlife officials rejected petitions Thursday to protect Yellowstone National Park's storied bison herds but pledged to consider protections for two other species—a tiny, endangered squirrel in Arizona and bees that ...

The new plan for destroying invasive pythons

Male pythons surgically implanted with inch-long radio transmitters that are then tracked by plane every two weeks. The hope is the male will lead to a female.

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