Category Archives: Climate

New video on Ethyl leaded gasoline

Science communicator Derek Muller of Veritasium posted this video on the history of Ethyl leaded gasoline on Earth Day, April 22, 2022.

How big oil knew about climate change


The oil industry was aware of the risks of climate change decades ago.

By Benjamin Franta, Stanford University

Four years ago, I traveled around America, visiting historical archives. I was looking for documents that might reveal the hidden history of climate change – and in particular, when the major coal, oil and gas companies became aware of the problem, and what they knew about it.

I pored over boxes of papers, thousands of pages. I began to recognize typewriter fonts from the 1960s and ‘70s and marveled at the legibility of past penmanship, and got used to squinting when it wasn’t so clear.

What those papers revealed is now changing our understanding of how climate change became a crisis. The industry’s own words, as my research found, show companies knew about the risk long before most of the rest of the world.

On Oct. 28, 2021, a Congressional subcommittee questioned executives from Exxon, BP, Chevron, Shell and the American Petroleum Institute about industry efforts to downplay the role of fossil fuels in climate change. Exxon CEO Darren Woods told lawmakers that his company’s public statements “are and have always been truthful” and that the company “does not spread disinformation regarding climate change.”

Here’s what corporate documents from the past six decades show.

Surprising discoveries

At an old gunpowder factory in Delaware – now a museum and archive – I found a transcript of a petroleum conference from 1959 called the “Energy and Man” symposium, held at Columbia University in New York. As I flipped through, I saw a speech from a famous scientist, Edward Teller (who helped invent the hydrogen bomb), warning the industry executives and others assembled of global warming.

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IPCC: Code Red on Climate Change

Reuters: “HUMANS ARE TO BLAME – FULL STOP  The Intergovernmental Panel on Climate Change (IPCC) used its strongest terms yet to assert that humans are causing climate change, with the first line of its report summary reading: “It is unequivocal that human influence has warmed the atmosphere, ocean and land.”

Associated Press;  ‘Earth’s climate is getting so hot that temperatures in about a decade will probably blow past a level of warming that world leaders have sought to prevent, according to a report released Monday that the United Nations called a “code red for humanity.”    “It’s just guaranteed that it’s going to get worse,” said report co-author Linda Mearns, a senior climate scientist at the U.S. National Center for Atmospheric Research. “Nowhere to run, nowhere to hide.

UN-IPCC:  GENEVA, Aug 9, 2021  – Scientists are observing changes in the Earth’s climate in every region and across the whole climate system, according to the latest Intergovernmental Panel on Climate Change (IPCC) Report, released today. Many of the changes observed in the climate are unprecedented in thousands, if not hundreds of thousands of years, and some of the changes already set in motion—such as continued sea level rise—are irreversible over hundreds to thousands of years.  However, strong and sustained reductions in emissions of carbon dioxide (CO2) and other greenhouse gases would limit climate change. While benefits for air quality would come quickly, it could take 20-30 years to see global temperatures stabilize, according to the IPCC Working Group I report, Climate Change 2021: the Physical Science Basis, approved on Friday by 195 member governments of the IPCC, through a virtual approval session that was held over two weeks starting on July 26.