The level of antibiotic waste exceeds safety thresholds by up to 300 times in rivers around the world, according to a new study.
More than 50 researchers in seven countries uncovered 26,558 koala genes in mapping the much loved marsupial's DNA. They say it could help fight threats to the Australian icon, including from a chlamydia epidemic.
Unique antibacterial properties have been found in the milk of the platypus, a monotreme found only in Australia.
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