Investigators, who analysed virus genomes from over 7,500 infected people, find nearly 200 mutations in the SARS-CoV-2 virus since China's outbreak but say this does not mean it is getting deadlier.
Antibiotic usage has risen during the fight against secondary infections in coronavirus patients, raising concerns that it could create a dangerous pathogen.
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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