Teens who bum cigarettes every now and then find that addiction can happen before they know it. iStockphoto.com hide caption

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Study: A Cigarette A Month Can Get A Kid Hooked
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Ahoy: Meet The Navy's Humanoid Robot
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Solving The Riddle Of Why Matter Exists
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This colorized image shows part of the Ebola virus. The often-fatal Ebola hemorrhagic fever has appeared sporadically since its initial recognition in 1976. Frederick Murphy/CDC hide caption

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New Ebola Drug 100 Percent Effective In Monkeys
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Called red currant tomatoes, these Solanum pimpinellifolium are actually a tomato cousin, in the nightshade family. The fruits are intensely tomato-flavored and very sweet. Harry Klee hide caption

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Taking Tomatoes Back To Their Tasty Roots
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Red-Eyed Treefrogs Rumble In The Jungle
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Is Stem Cell Research Making Progress?
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Manmade Genome Controls A Cell
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Scientists Create First Synthetic Cell
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The Ethics Of Creating Synthetic Life
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Scientists report they have made a living cell from DNA that was originally synthesized in a lab. iStockphoto.com hide caption

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Scientists Reach Milestone On Way To Artificial Life
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