Moths, bats and owls are just some of the animals best observed at night, and they tell us a lot about the health of ecosystems. Age of Extinction reporter Phoebe Weston ventures into a dark wood with Chris Salisbury, author of Wild Nights Out, to see what she can learn by watching and listening to wildlife. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>
