Most scientists agree that the impact of an asteroid hitting Earth played a major role in the extinction of dinosaurs but now there's a brand new theory about how exactly that happened.

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U.S. Approves Sale of 'Lab Grown' Cell-Cultured Chicken
For the first time, U.S. regulators on Wednesday approved the sale of chicken made from animal cells, allowing two California companies to offer “lab-grown” meat to the nation's restaurant tables and eventually, supermarket shelves.
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