13 Things You Shouldn’t Do Today

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Friday the 13th: 13 Things You Shouldn't Do Today         Feeling lucky? Push your luck with this list of 13 things you should never do, according to various superstitions. Read More WATCH VIDEO: Are We All Crazy? Psychologists have been trying to categorize human behavior for nearly two centuries. Voyager 1 Exits Solar System         After a 35-year journey, NASA's Voyager 1 spacecraft left the solar system to become the first human-made object to reach interstellar space. Read More WATCH VIDEO: Peace Out, Voyager 1 Which spacecraft is more likely to find life in space? Curiosity or Voyager? Take the Friday News Quiz         In this edition: Interstellar spacecraft, robot revolution and some disturbing news about dad. Read More WATCH VIDEO: Do Smaller Testicles Make Better Dads? Is this really a case of cause and effect? Found: The Biggest Volcano Out There: Video         Scientists believe they've discovered the largest volcano on Earth! But, as big as it is, it's still not the biggest one out there. 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