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What Can Chickens Tell Us About Human Diseases? | Earth Lab

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 Biology   |   Health   |   Science
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A virus has evolved to kill vaccinated chickens.
Best of Earth Lab: http://bit.ly/EarthLabOriginals
Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos
The Doctors Are In The House: http://bit.ly/TheDoctorsAreInTheHouse

Horizon: Are We Still Evolving?
Dr Alice Roberts asks one of the great questions about our species: are we still evolving? There's no doubt that we're a product of millions of years of evolution. But thanks to modern technology and medicine, did we escape Darwin's law of the survival of the fittest? Alice follows a trail of clues from ancient human bones, to studies of remarkable people living in the most inhospitable parts of the planet, to the frontiers of genetic research to discover if we are still evolving - and where we might be heading.

Welcome to BBC Earth Lab! Here we answer all your curious questions about science in the world around you (and further afield too). If there’s a question you have that we haven’t yet answered let us know in the comments on any of our videos and it could be answered by one of our Earth Lab experts.

Want to share your views with the team? Join our fan panel: http://tinyurl.com/YouTube-BBCEarth-FanPanel

This is a channel from BBC Studios who help fund new BBC programmes.Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx

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