The arctic tern carries out the longest migration of any creature on Earth a journey of more than 36,000 kilometres (or 22,000 miles) from the Arctic to the Antarctic and back again, each year!
Magic sponge
Magic sponge Researchers have found that some species of
Caribbean marine sponges manufacture their own antibiotics. Some of
these are actually found to be more powerful than commercially
produced antibiotics. 6 NOVEMBER 1999, P. 27
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