Climate News: 'Please, make no mistake, climate change is the biggest threat to security modern humans have ever faced' - David Attenborough

A warning from the English broadcaster, writer and naturalist, David Attenborough (pictured) - "Climate change is the biggest threat to security that modern humans have ever faced'. "How do climate scientists maintain their hope in a warming world?"; "Greens’ $8 billion scheme for 50 cent fares across Australia comes with costing questions"; "Trump Administration Considers Halting Congestion Pricing"; "What Climate Progress Is Possible Now?".