Hello, Earthlings! This is our weekly newsletter on all things environmental, where we highlight trends and solutions that are moving us to a more sustainable world. (Sign up here to get it in your inbox every Thursday.)

This week:

Cities want more of a say in fighting climate change Tracking global warming from space Why it matters to the world if China delivers on its carbon targets Cities want more of a say in fighting climate change (Christer Waara/CBC)

What On Earth36:23Why cities are key to cutting carbon

As all eyes turn to COP 26 in Glasgow, we hear the case