With all the biodiversity research that has already been done, are we close to knowing all of the types of life on Earth? NO! Scientists estimate that we have only documented about 10% - and that's a problem in terms of understanding ecosystem function and conservation. For more biodiversity tutorials, visit bit.ly/cas-khan. SUBSCRIBE: bit.ly/SubscribeToCAS About the Academy: The California Academy of Sciences is the only place on the planet with an aquarium, a planetarium, a natural history museum, and a 4-story rainforest all under one roof. It’s a stunning architectural achievement with hundreds of unique exhibits and nearly 40,000 live animals. Connect with us! • Get tickets: bit.ly/VisitAcademy • Explore our website: www.calacademy.org • Join our mailing list: bit.ly/AcademyList For more: • Like us on Facebook: bit.ly/CASonFB • Follow us on Twitter: bit.ly/CASonTwitter • Add us on Google+: bit.ly/CASonGoogle

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