Wallace Smith Broecker, the 'grandfather' of climate science, leaves a final warning for Earth

The man who popularized the term “global warming” and first described the critical role oceans play on climate had an urgent message for 40 of the world’s top climate scientists. Humanity is not moving quickly enough to slow the production of carbon dioxide that is warming the Earth, Broecker said Feb. 11, his livestreaming image projected onto a big screen at Arizona State University, where researchers had met to discuss untested solutions to global warming.

Wallace Smith Broecker speaking in Rome in 2008.

After struggling with heart disease for decades, the renowned climate scientist Wallace Smith Broecker had made it clear he was acutely aware of his own mortality. So when he sat down in front of a video camera to record a final message to his fellow scientists in mid-February, the 87-year-old researcher knew his days were few.

It was time for humankind and the world’s scientific community to begin to seriously study more extreme solutions to the climate crisis, Broecker said. That included creating a massive solar shield in the Earth’s atmosphere, a tactic known variously as "geoengineering," "the sulfur solution," “solar radiation management" and the "Pinatubo Strategy.”

Read the  story from NBC News by James Rainey - “Wallace Smith Broecker, the 'grandfather' of climate science, leaves a final warning for Earth.”

Coal mining, transport and burning brings pollution problem to Hunter Valley

The recent studies of air pollution in the Hunter finally show us the constituents of pollution and points to the likely sources. We agree with the editorial comment (Newcastle Herald, April 30) that it is extraordinary that the EPA seems to have leapt to the defence of the coal industry, because a close look at the results shows that coal mining, transport and burning is a major contributor to pollution.

Air pollution is a complex mixture of components. The largest fraction shown from the Particle Characterisation Study in Newcastle was sea salt which is probably innocuous, however this is true wherever air pollution has been studied. The large health studies from Europe and North America showing air pollution to cause lung cancer and heart disease also included a salt fraction, so this is not an argument to ignore the high levels of fine particle pollution recorded here.

Read the Newcastle Herald story - “We need a regional air quality plan for the Hunter.”