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The asteroid that crashed into Earth 66 million years ago unleashed a catastrophic series of events.
If the ice disappeared during the summer, many creatures that rely on it would be driven to extinction, scientists warn.
A grizzly bear attacked a photographer's camera trap and the resulting image won the Animals in their Environment category at the 2021 Wildlife Photographer of the Year competition.
Blackworm blobs can move as one organism by striking a perfect balance between wiggling and clinging, a discovery that could aid the development of soft robotics.
Researchers are set to break the world record for the most precise value of pi, after using an advanced computer to calculate the famous constant to 62.8 trillion decimal places.
Arachnophobia is a fear of arachnids, a group of arthropods that includes spiders, scorpions, ticks and mites.