How to smear sunblock on a planet

Bloomberg: Similar to the way a slather of sunscreen can help prevent sunburn, one of its ingredients--titanium oxide--could be injected into the stratosphere to help keep the Earth from overheating, according to a British chemical engineer. Peter Davidson, former senior innovation adviser to the United Kingdom's Department of Business Enterprise and Regulatory Reform, wrote in the May issue of the chemical engineering journal tceToday that TiO2, which is also used in paint and inks, is nontoxic, readily...

URL: http://www.businessweek.com/news/2012-05-18/how-to-smear-sunblock-on-a-planet
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