Today in History – February 21, 1994 -  Whirlpool begins production of refrigerators without freon.
In the 1930s, refrigerators began to use freon as a refrigerant. However, the use of freon became an environmental concern once it was identified as a ozone-depleting chemical. Fortunately, household appliance manufacturers have since switched to a different refrigerant, HFC-134a, [...]

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Today in history – February 16, 2005 – the Kyoto Protocol of the United Nations Framework on Climate Change goes into effect.
In 1992 the Framework Convention on Climate Change (UNFCCC) was adopted in order to meet the looming concerns of global warming. As greenhouse gas levels rose around the world it became clear that [...]

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Today in History – February 3, 1958 -  Rachael Carson publishes the Silent Spring. Rachel Carson, a writer, scientist and ecologist, worked seventeen years for the US Fish and Wildlife Service, where she learned about the problems of pesticides on the environment. She is best known for her book called Silent Spring, which is [...]

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Today in History- January 15, 1955 – first solar-heated and radiation-cooled house in the United States. Respect for the powers of the sun has been a critical part of building design since humans first built shelters for protection from the environment. I grew up in the American Southwest and recall that adobe buildings were designed [...]

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Today in history – December 11th, 1997 – the Kyoto Protocol to the United Nations Framework on Climate Change was signed.
In 1992 the Framework Convention on Climate Change (UNFCCC) was adopted and was a major force in addressing the problem of global warming. As greenhouse gas levels rose around the world it became clear [...]

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