venerdì 30 settembre 2011

Plants and CO2

Plants absorb carbon dioxide and exhale Oxygen. They are a major part of the global cycle. The global uptake of carbon by land plants may be up to 45 per cent more than previously thought. This is the conclusion of an international team of scientists, based on the variability of heavy oxygen atoms in the carbon dioxide of the atmosphere driven by the El Niño effect. As the oxygen atoms in carbon dioxide were converted faster than expected during the El Niño years, current estimates for the uptake of carbon by plants are probably too low. These should be corrected upwards, say the researchers in the current issue of the scientific journal NATURE. Instead of 120 petagrams of carbon, the annual global vegetation uptake probably lies between 150 and 175 petagrams of carbon. This value is a kind of gross national product for land plants and indicates how productive the biosphere of the Earth is. The reworking of this so-called global primary productivity would have significant consequences for the coupled carbon cycle-climate model used in climate research to predict future climate change.

Afghanistan Mineral Potential

Mineral deposits can create jobs, industry, wealth and potentially pollution. It could help stabilize a war torn country such as Afghanistan. Working with the Department of Defense Task Force for Business and Stability Operations (TFBSO), members of the USGS Minerals Project assessed fuel- and non-fuel mineral resources of Afghanistan from October 2009 to September 2011 with the goal of identifying particular deposits that could be relatively easily developed.The team identified key Areas of Interest (AOI)—and subareas within them—that fit these criteria. The AOIs contain mineral reserves or resources that have been well-documented through sampling in trenches, drill holes, and/or underground workings. Most are accessible by existing roads. So to develop or not to develop.

New Zealand adjusts its CO2 trading program to address market distortions

New Zealand is looking to exclude the use of U.N. offsets from industrial gas projects in its emissions trading scheme from as soon as 2012, as these offsets threaten to distort the market, the government said on Friday.

giovedì 29 settembre 2011

L.A. Air Force Base Will Deploy 100% Electric Vehicle Fleet

The U.S. Air Force recently announced that its Los Angeles base would be the first federal facility to replace 100 percent of its general purpose fleet with electric vehicles. This switch will mean all 40 vehicles owned or leased by the base, including passenger sedans, two-ton trucks and shuttle buses, will be replaced by fully-electric, plug-in hybrid electric, and extended-range electric alternatives. Force protection, tactical and emergency response vehicles will remain exempt for now.

World has 'enough water' for future food needs

There is enough water in the world's rivers to meet the demands of the expanding global population, but the rivers have to be better managed, according to a series of studies released today at the 14th World Water Congress in Porto de Galinhas, Brazil.

mercoledì 28 settembre 2011

Potatoes and Potassium

Many people enjoy potatoes which also have historical significance such as the great Irish great potato famine that forced many to emigrate. Fruit are also perceived as healthy. Research presented in September 2011 at the American Dietetic Association's (ADA) Food and Nutrition Conference and Expo (FNCE) demonstrates that potatoes are one of the best nutritional values in the produce department, providing significantly better nutritional value per dollar than most other raw vegetables. Per serving, white potatoes were the largest and most affordable source of potassium of any vegetable or fruit. Potatoes were the lowest cost source of dietary potassium, a nutrient identified by the 2010 Dietary Guidelines as lacking in the American diet. The high cost of meeting federal dietary guidelines for potassium, 4,700 mg per person per day, presents a challenge for consumers and health professionals, alike. However, the cost of potassium-rich white potatoes was half that of most other vegetables.

Ford Develops E-Bike Protoype

Earlier this year, Ford announced its ongoing commitment to vehicle electrification.. The automaker will be sticking to expansions in four-wheel offerings, but, surprisingly they’re also also turning their attention to two-wheelers: E-bikes. While this change represents a radical departure from the company’s core offering, it’s a logical move nonetheless. Vehicle electrification might be the sort of technology that forces a paradigm shift in personal transportation. Although electric vehicles have been around for as long as those powered by internal combustion engines, advanced batteries, sophisticated software controllers and modern and compact electric motors have created new opportunities to reinvent traditional vehicle platforms — the lowly bicycle included.