Want more natural history and wildlife videos? Visit the official BBC Earth channel: http://bit.ly/BBCEarthWW BBC Earth The BBC Earth YouTube channel is home to over 50 years-worth of the best animal videos from the BBC archive. With three new videos released every week there’s something for all nature loves from astounding animal behaviour to beautiful imagery. Click here to find our more: http://bit.ly/BBCEarthWW Sir David Attenborough and the Planet Earth team discover the weird world of the Cordyceps; killer fungi that invades the body of an insect to grow and diminish the insect population. Fascinating animal and wildlife video from the BBC epic natural world masterpiece 'Planet Earth'. This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: https://www.bbcstudios.com/contact/contact-us/