Doomsday Déjà Vu in Comet ISON

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Comet ISON Offers Doomsday Déjà Vu         Like the comets that have come before it, Comet ISON is seeing its fair share of crackpot doomsday theories. Read More WATCH VIDEO: Could We Lasso an Asteroid? Large asteroids are filled with precious metals that some hope to bring back to Earth. Football Uniforms Through History: Photos         Uniforms have come a long way from wool jerseys, knee-high socks and leather helmets. Read More WATCH VIDEO: Football Helmets Detect Concussions New helmets with built-in sensors can help prevent serious injury. Autumn Is Here, See Its Colors: Photos     %%t_fblike_url("http://news.discovery.com/earth/plants/colors-and-signs-of-autumn-pictures-130908.htm#mkcpgn=fbnws1","Autumn Is Here, See Its Colors: Photos ")%%     The end of summer and the start of autumn has arrived in the northern hemisphere. Read More WATCH VIDEO: The Taste of Color The colors in our environment make a major impact on how our food tastes. What Tattoos Really Say About You: Video         Tattoos are perhaps the ultimate form of self expression. But does all that ink doom you to a life of being judged? Watch Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2013 Discovery Communications, LLC