![Naked Scientists Special Editions show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/034/511/small/naked-scientists-special-editions.png)
Summary: This week in the Planet Earth Podcast - how scientists find out about life in the oceans' deepest trenches; how identifying proteins from 50 milion year old reptile skin could help us store radioactive waste; and studying the effects of climate change in the Arctic.