In some parts of the world, taking a stand for the planet can be incredibly dangerous. This week we hear from Laura Furones, of the campaign group Global Witness, on the finding that 227 environment activists were murdered in 2020. She explains why this is happening and what needs to be done to protect these people. In de-extinction news, $15 million has been given to a team hoping to bring mammoths back to life. While exciting news for some, evolutionary biologist Tori Herridge discusses the ethical implications of creating mammoth-elephant hybrids. The team finds out the latest on the UK’s plans to vaccinate children, and whether the country is likely to face another lockdown. They also discuss the SpaceX Inspiration4 mission, and learn that cows are easier to potty train than toddlers. Your hosts on the pod are Rowan Hooper and Penny Sarchet. To read about these stories and much more, subscribe at newscientist.com/podcasts. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.