Trouvelot Astronomy – In 1875 Étienne Léopold Trouvelot, using the [Harvard] observatory’s 15-inch refracting telescope, produced this drawing of sunspots. At the time the human eye could detect more detail than photgraphic plates. (modern photos of sunspots) Trouvelot is also noted for the introduction of the Gypsy Moth to the U.S. More of thes illustrations [...]

Filed under: Art, Blogs, Good Sites, Science by gamma
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A/C D.C. The deluded world of air conditioning
Outdoor air used to cool at night, allowing us to recover from the day’s heat. Now it doesn’t. To fuel our own air conditioning, we’re destroying nature’s.
The hotter it gets, the more energy we burn. In 1981, only one in three American households with central air used it [...]

Filed under: Ecology, Politics by gamma
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