Was Earth a Migratory Planet?

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Was Earth a Migratory Planet?         By all accounts Earth today should be a snowball planet, unless it formed closer to the cooler young sun and then migrated outward as the sun warmed. Read More WATCH VIDEO: Pluto Gets Demoted Astronomy leaders vote to take away Pluto's planetary status, leaving the solar system with eight celestial bodies. Earth Through the Ages         In celebration of Earth Day, we look at the efforts of people throughout the ages to explore, understand and portray our world and its place in the Universe. Read More WATCH VIDEO: Time-Lapse Sky Project To get the pattern of nature Ken Murphy took 8,640 pictures of the sky every day for one year. Were You Born Mean?         Could bad behavior be partly genetic? A new study suggests so. Read More WATCH VIDEO: Addicted to Break-Ups New research shows the area of the brain associated with addiction is triggered during breakups. Mutant Crabs Turning Up in the Gulf         BP's massive oil spill may be related to the eyeless shrimp, clawless crabs and other deformed animals now found in the Gulf. Read More WATCH VIDEO: Antarctic Hot Springs Foster New Species Off the coast of Antarctica undersea vents provide a hot spring sanctuary supporting new species. From Our Sponsor 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 © 2010 Discovery Communications, LLC