OZ4C. Stay Current—CFCs Are Invented

Staying current for Chapter 4 { Ozone Contents } 2023-03-15. The Brilliant Inventor Who Made Two of History’s Biggest Mistakes. [https://www.nytimes.com/2023/03/15/magazine/cfcs-inventor.html] By Steven Johnson, The New York Times. Excerpt: While The Times praised him as “one of the nation’s outstanding chemists” in its obituary, today [Thomas Midgley Jr.] is best known for the terrible consequences of […]

OZ3C. Stay Current—The Dangers of UV to Living Things

Staying current for Chapter 3 See non-chronological resources for this chapter. { Ozone Contents } 2023-07-15. Why Sunscreen Is the Only Anti-Aging Product You Need. [https://www.nytimes.com/2023/07/15/well/live/sunscreen-aging-skin-care.html] By Dana G. Smith, The New York Times. Excerpt: …Dr. Frey said that as much as 80 percent of the skin changes we associate with age are actually caused by the […]

OZ2C. Stay Current—Ozone in Nature

Staying current for Chapter 2 { Ozone Contents } 2023-05-30. Plants Leave Chemical Fingerprints on an Ozone-Depleting Gas. [https://eos.org/research-spotlights/plants-leave-chemical-fingerprints-on-an-ozone-depleting-gas] By Sarah Stanley, Eos/AGU. Excerpt: Methyl chloride (CH3Cl) is one of the most common chlorine-based gases in Earth’s atmosphere. Along with related chemicals, it depletes the ozone layer, exposing life on the planet to more of the Sun’s ultraviolet […]

OZ1C. Stay Current—Strange Happenings

Staying current for Chapter 1 { Ozone Contents } 24 December 1997. Ozone Depletion FAQSample Question–Subject: 1.3) How does the composition of the atmosphere change with altitude? (Or, how can CFC’s get up to the stratosphere when they are heavier than air?) Answer: In the earth’s troposphere and stratosphere, most _stable_ chemical species are “well-mixed” – […]

LC13C. Stay Current—What Does Earth’s Past Tell Us About Our Future?

Staying current for Chapter 13 { Life and Climate Contents } 2023-03-16. Tonga Eruption May Temporarily Push Earth Closer to 1.5°C of Warming. [https://eos.org/articles/tonga-eruption-may-temporarily-push-earth-closer-to-1-5c-of-warming] By J. Besl, Eos/AGU. Excerpt: The underwater eruption of Hunga Tonga–Hunga Ha‘apai sent megatons of water vapor into the stratosphere, contributing to an increase in global warming over the next 5 […]

LC12C. Stay Current—Climate & Culture

Staying current for Chapter 12 { Life and Climate Contents } 2023-09-13. Eclipse Records Pin Dates of 12th and 13th Century Eruptions. [https://eos.org/articles/eclipse-records-pin-dates-of-12th-and-13th-century-eruptions] By Kate Evans, Eos/AGU. Excerpt: …ancient observations of rare dark lunar eclipses have recently taken on new importance after scientists used the records to date notable volcanic eruptions that occurred nearly a […]

LC11C. Stay Current—Climate and Human Evolution

Staying current for Chapter 11 { Life and Climate Contents } 2024-01-08. Strong monsoons may have carved a path for early humans out of Africa. [https://www.science.org/content/article/strong-monsoons-may-have-carved-path-early-humans-out-africa] By BRIDGET ALEX, Science. Excerpt: More than 140,000 years ago, East Asia was a much colder, drier place than today—a landscape that likely deterred many African creatures, humans among […]

LC10C. Stay Current—The Ice Ages

Staying current for Chapter 10 { Life and Climate Contents } 2024-08-01. Size of tropical glaciers at lowest point in at least 11,000 years. By Robert Sanders, UC Berkeley News. Excerpt: Glaciers are retreating around the world as the planet warms, but scientists have debated how severe the shrinkage is compared to periodic glacial advances […]

LC9C. Stay Current—What Happened to the Dinosaurs?

Staying current for Chapter 9 { Life and Climate Contents } 2023-04-26. Do Volcanoes Add More Carbon Than They Take Away?. [https://eos.org/research-spotlights/do-volcanoes-add-more-carbon-than-they-take-away] By Saima May Sidik, Eos/AGU. Excerpt: In a new study, Zhong et al. discovered that a volcano in northeast China emits a small net amount of carbon each year. Over geological timescales, that could have […]