This week Trace talks about how cats are good for humans! Seriously! They help build immunity and help sustain our mental health. Plus, he explains how Amelia Earhart's plane might be sitting just out of reach on the bottom of the Pacific, and how Earth and Mars both quake with plate tectonics. LINKS TO THIS WEEK'S STORIES: Pieces of Amelia Earhart's Plane Located? http://news.discovery.com/history/amelia-earhart-plane-located-120817.html#mkcpgn-ytnws1 The Truth About Cats: They're Good for Us http://news.discovery.com/animals/cats-health-humans-120821.html#mkcpgn-ytnws1 Shift Happens: Mars May Have Plate Tectonics http://news.discovery.com/space/shift-happens-mars-may-have-plate-tectonics-120820.html#mkcpgn-ytnws1 Discovery News' Mars Coverage http://news.discovery.com/mars MORE DISCOVERY NEWS VIDEO: http://DiscoveryNewsVideo.com CONNECT WITH DISCOVERY NEWS: Like us on Facebook http://facebook.com/discoverynews Follow us on Twitter @Discovery_News http://twitter.com/discovery_news Join our Tumblr http://discoverynews.tumblr.com Remember, our stories are selected by YOU the reader. To get your favorite story on the show leave comments on Facebook, tweet the stories and read Discovery News all you can!
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