The Rare Element That Could Limit Life on Earth | BBC Earth Science
BBC Earth Science 
About this video
Phosphorus is essential to life on Earth, but in the wider universe, it’s surprisingly scarce, earning it the nickname “life’s bottleneck”. In this episode of #Elemental, discover how something as routine as flushing the toilet could be contributing to its decline here on Earth. Best of Earth Science: http://bit.ly/EarthLabOriginals Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos 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
Watch this video in English to learn English
Watching real YouTube videos in English with subtitles is one of the highest-density ways to absorb the language. The Rare Element That Could Limit Life on Earth | BBC Earth Science from BBC Earth Science gives you native pace, natural intonation, and vocabulary you'll actually meet in real conversations.
In the Clue app, every subtitle is tap-to-translate. No app-switching, no pausing the video, no dictionary. Just watch.