Climate
“We find that global warming beyond 1.0 °C above pre-industrial levels, which has already been exceeded, carries a moderate likelihood of triggering tipping elements.”
nitrogen
Fads come and go. And come and go again. (Repeat until comatose). So it should come as no surprise that we have another, especially one involving food, which is a superb spawning ground for fads, such as kale (1).