Michael Mann writes:

After years studying the climate, my work has brought me to Sydney where I’m studying the linkages between climate change and extreme weather events.

Prior to beginning my sabbatical stay in Sydney, I took the opportunity this holiday season to vacation in Australia with my family. We went to see the Great Barrier Reef – one of the great wonders of this planet – while we still can. Subject to the twin assaults of warming-caused bleaching and ocean acidification, it will be gone in a matter of decades in the absence of a dramatic reduction in global carbon emissions.

We also travelled to the Blue Mountains, another of Australia’s natural wonders, known for its lush temperate rainforests, majestic cliffs and rock formations and panoramic vistas that challenge any the world has to offer. It too is now threatened by climate change.

I did not see vast expanses of rainforest framed by distant blue-tinged mountain ranges. Instead I looked out into smoke-filled valleys, with only the faintest ghosts of distant ridges and peaks in the background. The iconic blue tint (which derives from a haze formed from “terpenes” emitted by the Eucalyptus trees that are so plentiful here) was replaced by a brown haze. The blue sky, too, had been replaced by that brown haze. [Continue reading…]