Articles by Senior Data Reporter Clayton Aldern

Has Fannie Mae’s $95 billion in green bonds made anything greener?

'We're looking at some measure of greenwashing in the largest program in the world.'

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