Word: plantes
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...work. One clear reason is rising levels of ragweed pollen - which can be connected directly to rising levels of CO2. Researchers have shown repeatedly that elevated levels of CO2 stimulate weeds to produce pollen out of proportion with their growth rates - meaning you get more pollen per plant, which means more allergies. Even worse, it seems that the weediest species seem to thrive disproportionately in high CO2 environments. The wave of urbanization in America and much of the world doesn't help - the urban environment, often hotter and with more CO2 than rural areas, is ragweed heaven. "Urban places, because...
...year-old Australian engineer went to the tropical island of Sulawesi in Indonesia's east five years ago to open a gold mine on a palm-studded hillock outside the provincial capital, Manado. He has yet to overturn one shovel of ore. A half-built processing plant sits idly alongside a dirt track. Among the only signs of activity to be spotted are in the picturesque bay nearby, where fishermen paddle wooden canoes. The mine's operator, Perth-based Archipelago Resources, has faced delays because of a political battle that has raged from the villages outside the mine's gate...
Over two decades ago, I found my calling working in a community devastated by steel-plant closings. My story is not unique. Generations of Americans have connected their stories to the larger American story through service and helped move our country forward...
...crude at one point this year reaching $147 per bbl., interest in alternative sources of oil is unprecedented. A big part of that interest comes from the U.S., India and China, which all rely on oil imports and have massive coal reserves. Feasibility studies for Sasol to build two plants in China, each projected to produce 80,000 bbl. a day by 2012, are at an advanced stage. In the U.S., Sasol is courting interest from several states, including Montana, Illinois and Wyoming, as well as the U.S. military, which is attracted by the security advantage of a U.S.-based...
...course, nothing's ever that simple in the energy business. Sasol's end product is cleaner than the average diesel fuel or gasoline, emitting less sulfur and less nitrogen when it burns, says Barrows. Coal-to-liquid plants can also be used to clean up the mountains of coal left over at old mines. But in terms of carbon emissions, Fischer-Tropsch is dirty. A sliding scale of emissions from fossil fuels, goes: coal, petroleum, methane. Coal emits the most carbon dioxide per unit of energy obtained. The resultant fuel also emits more carbon dioxide when burned...