A baby stegosaurus' first steps 150 million years ago can now be modeled in 3D with a few clicks on a camera phone. The technology makes studying dinosaur footprints cheap and easy.
By Rebecca Jacobson, Inside Energy
Scientists have mapped out much of the genetic code of the extinct woolly mammoth, opening the door to the possibility of recreating the animal and perhaps other extinct species within the next 20 years.
By PBS NewsHour
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