print email comment close Dimming the Sun URL: http://www.pbs.org/wgbh/nova/sun/ Description: Companion to an April 2006 Public Broadcasting Service (PBS) Nova program about how "new evidence that air pollution has masked the full impact of global warming suggests the world may soon face a heightened climate crisis." Features material about history of this phenomenon going back to volcanic eruptions during the 18th-century, how contrails (vapor trails from aircraft) may influence the climate, and information about clean air technologies. Includes a teacher's guide and transcript. Publisher: WGBH Educational Foundation Extra Keywords climate change LII Database Information: Record 21949 created by Maria Brandt on 06/25/2006 Last modification on 06/27/2006 Published: 06/29/2006   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/21949