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Peat. Climate and Fires
Peat, or turf, is an accumulation of partially decayed vegetation matter. Peat forms in wetland bogs, moors, and peat swamp forests. Peat is harvested as an important source of fuel in certain parts of the world. Peat has a high carbon content and can burn under low moisture conditions. Once ignited by the presence of…
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Pterodactyl Flight
Pterodactyl are not giant birds and indeed if they were, they might not even be able to fly based on standard theories of flight. Some have proposed that they vaulted and then glided on the winds. These ancient reptiles that flew over the heads of dinosaurs – were at their best in gentle tropical breezes,…
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Galactic Outburst
Astronomers using NASA’s Spitzer Space Telescope have found a stunning burst of star formation that beams out as much infrared light as an entire galaxy. The collision of two spiral galaxies has triggered this explosion, which is cloaked by dust that renders its stars nearly invisible in other wavelengths of light. Although bright as this…
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European Carbon Emissions
The European Commission said on Monday a proposal to limit the use of some carbon credits from industrial gas projects in its emissions trading scheme might be unveiled during a United Nations climate summit in Mexico next week. The European Union Emissions Trading Scheme is the largest multi-national emissions trading scheme in the world. The…
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Comet Dust
Comets are temporary night flashes across the sky. They are rarer than meteors and are further away. The EPOXI mission’s recent encounter with comet Hartley 2 provided the first images clear enough for scientists to link jets of dust and gas with specific surface features. The EPOXI mission spacecraft revealed a cometary snow storm created…
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Squids
When one imagines a squid, the image that comes to mind is of a giant monster (i.e, Kraken of mythic fame) grappling with boats and whales. Squid are marine cephalopods of the order Teuthida, which comprises around 300 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid,…
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Solar Windows
Windows let in light and with the light solar heat. There are many forms of passive design control of windows to maximize the light, collect the heat, and maximize or minimize the heat that enters through the window. Heat is energy and can be theoretically transformed into power and electricity. A new type of transparent…
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Smoke of All Sorts
Smoke is a strange mixture of exotic pollutants and incomplete combustion products. Of course, some people smoke cigarettes for the pleasure of it. For most people smoke is unpleasant and should be avoided. Many people watch firework displays and go “wow” and the smoke from them adds a bit of the zest to the event.…
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The New Floods and Draughts
Dust storms scour Iraq. Freak floods wreak havoc in Saudi Arabia and Yemen. Rising sea levels erode Egypt’s coast. Tuvulu and the Seychelles may disappear altogether as hey submerge into the ocean. A comprehensive vulnerability index suggests you move to Scandinavia, Ireland or Iceland as slightly safer places. The teeming plains of Asia are at…
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Blood and Skin
The supply of blood for patients and emergencies has always fluctuated. Generally it is dependent on adequate donations from the public. A more dependable source would be useful. While local and temporary blood shortages have occurred periodically, the nation’s blood supply generally is considered adequate. There is also a problem of genetic compatibility. In a…