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From fins to legs to fins again | Earth | EarthSky

From EarthSky // Earth, Science Wire |April 20, 2015 Whales, dolphins, seals and sea turtles are members of an exceptional group of animals, called marine tetrapods, that have moved from the sea to the land and back to the sea again over the last 350 million years — each time making radical changes to their life style, body shape, physiology and sensory systems. What made these animals return to the ocean? Neil Kelley is a researcher at the Smithsonian National Museum of Natural History’s …

Jurassic Park in real life: The race to modify the DNA of endangered animals and resurrect extinct ones – Science – News – The Independent

By Steve Connor | April 14, 2015 Jurassic Park has a lot to answer for. It made the idea seem so simple. Take the DNA from a microscopic drop of dinosaur blood, preserved for 65 million years in the gut of a mosquito trapped in fossilised amber. Carry out a bit of jiggery-pokery involving chaos theory and Jeff Goldblum. Insert the dino DNA into the yolk of a crocodile’s egg and leave to incubate. Soon you’ll have a thriving menagerie of once-extinct beasts roaming the jungles of someone’s …

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