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Articles by Michael MacCracken
How do Greenhouse Gases Actually Warm the Earth?
The phrase “greenhouse effect” often appears in discussions of climate change and global warming. It is the name for a natural atmospheric process that largely determines Earth’s temperature and climate, making it livable. Without the greenhouse effect, Earth’s average surface temperature would be approximately 0°F rather than 59°F (NASA, 2025); thus, the greenhouse effect is essential to supporting liquid water over most of the planet and allowing life to flourish.
Geoengineering: A Possible Climate Change Insurance Policy?
Photo © ochus b at Flickr under a Creative Commons license. Even if all emissions of greenhouse gases and aerosol precursors ended today, more warming would occur in coming decades than the 0.8°C that has occurred to date, greatly intensifying climate change and its associated impacts. Already, sea level is rising, sea ice and mountain glaciers are retreating, the ranges of plant and animal species are shifting poleward and upward, and the Greenland and Antarctic ice sheets are both losing mass.
The Soviet scientist who disappeared in 1980s Madrid
It’s March 31, 1985 and the countercultural scene known as La Movida is in full swing in Madrid. One of the most important scientists from the Soviet Union, Vladimir Alexandrov, has just arrived from Córdoba after participating in the Assembly of Non-Nuclear Cities on the invitation of the city’s mayor, Julio Anguita of the Spanish Communist Party. Alexandrov, 47, had been in Spain for three days and was reportedly drunk throughout that time.
The Rationale for Accelerating Regionally Focused Climate Intervention Research
Ten years ago, Paul Crutzen asked whether the time had come to consider undertaking research into intentionally intervening in the climate system so that it might be considered a policy option comparable to reducing emissions for limiting human-induced climate change. Crutzen's article pointed out how little progress had been made in reducing emissions and suggested that resurrecting decades-old ideas for imitating volcanic eruptions as a possible intervention might be needed.
Debunking Ridley and Peiser’s WSJ Climate Guide
Been in a serious car accident? Well, thank you for your contribution to increasing the GDP by needing a new automobile, requiring extensive health care, and creating a job for the person replacing you at work while you go through rehabilitation. Sound absurd? It should. But when people claim climate change will be beneficial, that is basically the way they’re counting.
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