Humans burning old fossil fuels spew out carbon-12, which is NOT radioactive.

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Old school fossil fuels.

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Inefficient energy use is what's bad for the economy, as is the collateral damage in terms of pollution, erosion of water resources, and international security that accompanies old-school fossil fuel and nuclear solutions on the supply side.

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He noted that the old Reichstag, heated and cooled by fossil fuels, produced 6, 400 metric tons of carbon dioxide a year.

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New York (CNN) -- An international custody battle over a 70 million-year-old dinosaur skeleton ended Monday with the fossil being repatriated to Mongolia after having been illegally smuggled, handed from owner to owner multiple times and sold at auction.

CNN: Dinosaur bones headed home to Mongolia

And knowing the rate at which neutral mutations accumulate in most animal species, the 50% figure suggests that the first asexual rotifer lived about 80m years ago twice as far back as the oldest known fossil bdelloid, a 40m-year-old specimen preserved in amber.

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The best fossil and DNA evidence today indicates it was a rare Neanderthal who lived past the ripe old age of 35.

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