Oxygen on comet 67P Molecular oxygen (O2) detected on comet Churymov-Gerasimenko 67P, has scientists baffled. Current models of the formation of our Solar System do not predict conditions that would allow for O2.

Bees and antimicrobial drugs The antibacterial properties of honey have been exploited for thousands of years, but now scientists at the University of Cardiff are using honeybees to collect and identify plant-derived drugs which could be used to treat antibiotic resistant hospital pathogens. By screening honey for these plant compounds and identifying the plant through the pollen grains in the honey, researchers can narrow down the active ingredients and even exploit this to get bees to make medicinal honey.

Reproducibility of science experiments A lot of science experiments, when redone, produce different result. Professor Dorothy Bishop chaired a report, out this week, on reproducibility in science. She explains why reproducibility is important, why failures are due to many factors beyond fraud, and how measures, such as pre-registration and collaboration on large expensive experiments, can help make science more robust and repeatable.

Reintroduction of beavers In National Mammal Week and the Mammal Society UK is giving a whole day of its national conference at Exeter University over to the reintroduction of European beavers. In February last year a group of beavers were spotted apparently having been living and breeding on the River Otter in Devon for quite some time. By March this year an attempt by DEFRA to remove them had been challenged by local campaigners and now a 5 year watch period has been set up over which time the effects of the beavers on the ecosystem will be monitored. But how might the renegade rodents have been influencing the ecosystem? And with another project currently underway to reintroduce the Pine Marten, a large relative of the weasel, to Wales is there a new public focus on mammal reintroductions in the UK?

Producer: Fiona Roberts

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