Science Weekly Folgen

Butterfly numbers in the UK appear to be at the lowest on record after a wet spring and summer dampened their chances of mating. This comes on top of a long and worrying trend of decline. To find out what’s going on and what we can all do to help butterflies cope with extreme weather patterns, Phoebe Weston speaks to Dr Richard Fox, the head of science for the charity Butterfly Conservation, and to Matthew Hayes, who is part of the Banking on Butterflies project, a collaboration between the Insect Ecology Group at the zoology department in Cambridge University and the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. Help support our independent journalism at theguardian.com/sciencepod

For the regular drinker it is a source of great comfort: the fat pile of studies that say a daily tipple is better for a longer life than avoiding alcohol completely. But a new analysis challenges that thinking and says it was based on flawed research that compares drinkers with people who are sick and sober. Madeleine Finlay hears from the study’s lead author, Tim Stockwell, a scientist at the Canadian Institute for Substance Use Research at the University of Victoria, to find out why scientists (including him) were so convinced, and what the actual risks of alcohol are. Help support our independent journalism at theguardian.com/sciencepod

Jess Thom, lead psychologist for Team GB, tells Madeleine Finlay how she prepares athletes for failure and success – and the challenges that arise when the games are over and they have to return to normal life. Help support our independent journalism at theguardian.com/sciencepod