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Researchers in Uganda have observed female – as well as male – chimpanzees killing the offspring of an incoming females but propose different socioecological explanation for their behavior. Natural carbon dioxide sinks like the Southern Ocean are failing to keep up with the amount of gas released by mankind much earlier than expected. Nasa holds a competition for building technologies suitable for the Moon's loose surface material (regolith). Against expectation, adult mouse hair folicles found to regrow after wounding, which might hold out hope for a treatment for human hair loss. Plus, how does an angry clownfish make its clicking noises?