What we learned this week

As the Euro 2021 football tournament gets underway, the BBC asks what the carbon cost of the event will be. A few years ago this was only of interest to environmental publications. Now it’s the BBC. Give it a couple more years and EUFA and FIFA will be asking too.

Followers of fusion power will be interested to hear about the new record set in China, where their research reactor generated temperatures of 120 million degrees Celsius – eight times hotter than the core of the sun – for two minu...