Renewable energy said to have overtaken coal in 2025.

( Science Week , day 6!) Justin Rowlatt for the BBC : Renewable energy overtook coal as the world's leading source of electricity in the first half of this year - a historic first, according to new data from the global energy think tank Ember. This must be a difficult thing to study, but the BBC felt comfortable making the claim in the article's headline, so let's suppose it's true. We know a few…