I now look back on my 20 years of climate activism as a colossal failure | Tim Flannery

The climate crisis is so severe the actions of the denialists are now an immediate threat to our children

In this age of rapidly melting glaciers, terrifying megafires and ever more puissant hurricanes, of acidifying and rising oceans, it is hard to believe that any further prod to climate action is needed.

But the reality is that we continue to live in a business-as-usual world. Our media is filled with enthusiastic announcements about new fossil fuel projects, or the unveiling of the latest fossil-fuelled supercar, as if there's no relationship between such things and climate change.