What we learned this week

After a good start over the last few years, the huge energy energy needs of AI has punched a big hole in Google’s net zero plans. Emissions have risen by 51% in a year.

For those of us in the northerly climes of the UK, it’s easy to underestimate the global potential of solar power. As a new report from Ember points out, batteries are now cheap enough that whole cities could be run on solar power overnight, and entirely solar cities are possible in the sunniest parts of the world.

Here’s ...