Carbon capture technology has been around for decades — here’s why it hasn’t taken off

Elon Musk is going to pay $100 million towards a prize to come up with the best carbon capture technology. (Or so he tweets. Details are scarce so far.) The maverick tech CEO’s promise is not particularly notable for its generosity. With a net worth of over $200 billion, $100 million is 0.05% of Musk’s wealth.