TOP 100 CAMPING SITES
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| Beyond Fossil Fuels: Lucien Bronicki on Geothermal Energy Editor's note: This Q&A is a part of a survey conducted by Scientific American of executives at companies engaged in developing and implementing non–fossil fuel energy technologies. Bronicki replied to the survey in a phone interview; what follows is an edited and condensed transcript of that conversation.What technical obstacles currently most curtail the growth of geothermal energy? What are the prospects for overcoming them in the near future and the longer-term? [More] rss.sciam.com |
John Rennie Recollects the Moon Landing Forty years ago this month I walked on the moon with Neil Armstrong and Buzz Aldrin. The odds are good that you did, too, if you were within the reach of a television or radio on that July 20. My family and 10-year-old self were vacationing on Cape Cod at the time, but my attention was mostly 230,000 miles overhead. With whelk shells in the silky white dunes, I rehearsed the lunar mod­ule’s landing dozens of times along audacious flight plans that NASA would no doubt have discouraged.For days I watched news anchor Walter Cronkite take America on tours of mission control and interview scientists and engineers about what the astronauts might find in the Sea of Tranquillity. Film clips recalled past fantasies of lunar exploration, from the French 1902 short Le Voyage dans la Lune to the 1950 classic Destination Moon. To this day, I remember learning about the Great Moon Hoax of 1835, which claimed that telescopes had seen bat-winged humanoids flitting through lunar caverns. [More] rss.sciam.com |
Nuts, Bolts, Photons and Electrons of Solar Energy The transcript of this podcast wil be posted in two to three weeks.Jeff Wolfe, the CEO and co-founder of groSolar, talks about solar energy's present and future. [More] rss.sciam.com |
Threat Down Below: Polluted Caves Endanger Water Supplies, Wildlife The Bluestone River that straddles the Virginia-West Virginia border has long been a popular trout-fishing spot, as well as a source of drinking water for nearby towns. [More] rss.sciam.com |
Are Algae Mass Murderers? Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the oceans and now even a dead horse in France . That's right. The fumes from decomposing algae on a French beach killed a horse and rendered its rider unconscious this past summer. And poisonous tides caused by algal blooms make eating shellfish dicey at times as well as causing mass die-offs of fish, birds and even sea-going mammals. Plus, according to a new theory, that might just be a small taste of the plants' killing ability. [More] rss.sciam.com |