Each year, around 2.7M people are afflicted with poisonous snake bites. Enter, antivenom. Zoologist Yussef Rafik heads to the Liverpool School for tropical Medicine to understand how exactly venom extraction works. Subscribe: http://bit.ly/BBCEarthSub #SnakeVenom #24HoursWith #BBCEarthWatch more: Planet Earth http://bit.ly/PlanetEarthPlaylist Blue Planet http://bit.ly/BluePlanetPlaylist Planet Earth II http://bit.ly/PlanetEarthIIPlaylist Planet Dinosaur https://bit.ly/PlanetDinosaurPlaylistWelcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.This is a commercial page from BBC Studios. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx