The US election 2020 is one of three crucial events this year that will establish long-term global action on climate change and biodiversity, writes Graham Lawton

By Graham Lawton
Drew Angerer/Getty Images
WELCOME to 2020, the year that began with Australia in flames and its leaders in denial, and could end with the whole world facing the same predicament.
To say that this is a pivotal year for the environment is no exaggeration. To borrow a sporting analogy, it is crunch time, with three knife-edge fixtures that will establish the direction and scope of global action for years to come and with it, maybe the habitability of the planet.
The first big one is the biodiversity convention in Kunming, China, in October, where the UN and heads of government …