Articles by Senior Data Reporter Clayton Aldern

The truth about Bitcoin’s energy use

Do cryptocurrencies like Bitcoin amount to climate arson or a clean-energy boon? It’s complicated.

What do NFTs mean for art? And for the Earth?

Yes, the latest crypto craze uses the same dirty blockchains. There’s a better way.

The Permian Basin is ground zero for a billion-dollar surge of zombie oil wells

How we calculated the size of the Southwest’s abandoned oil well problem

Using machine learning, we found that states are grossly undercounting orphan wells.