Being susceptible to visual illusions is part and parcel of life not just for humans, but many other species – including bees.
The rapidly-mutating SARS-CoV-2 virus is testing the resilience of the world’s responses, with some variants evolving to become more infectious, and threatening a third wave.
The Tasmanian tiger's superficial appearance was so similar to a wolf's that European colonists assumed it was a threat, and hunted it to extinction.
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