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More than a mere biological oddity, the discovery adds weight to Oremland's theory that the bacteria's ability evolved billions of years ago, when the first life was just getting started on Earth. At the time, the planet's oceans were devoid of oxygen, but hydrothermal vents spewed elements such as sulfur, iron and arsenic into the water column.

In this ancient stew, arsenic may have been an important nutrient to life. The life forms would have used whatever they could to survive these noxious waters, and sunlight and arsenic were probably plentiful.

Poison or Fuel?

Mercedes-Benz Formula Zero luxury racer concept

Million Euro Mini Limo is World’s Most Pimped Ride

The Iconic GTR Roadster, great performance and unique style.

Reasons for Global Warming Global warming can be minimized to a great extent, if we eliminate the causes which are mostly human made. The responsibility of preventing global warming rests both on individual as well as the state. In individual level we can change our practices such as minimize the usage of fossil based fuel, reduce the electricity consumption by using energy efficient appliances. Vehicular pollution can be minimized by using the public transport system. The nucleus goal is to beget the global warming under control by restricting the carbon dioxide release and other heat ensnaring greenhouse gases into the environment. On an average nearly 10000 pounds of carbon dioxide is released per year in significant countries like Canada and US. This can be immediately curtailed by becoming energy efficient. Reducing the usage of oil, coal and gasoline are one of the effective ways of preventing global warming.

price hikes continued throughout the next decade.

solar energy proved impractical for most large-scale applications.

Western countries, including France, effectively used nuclear energy as an alternative power source.

Solar energy is a term used to identify the electromagnetic radiation emitted by the Sun and intercepted by Earth. It is the world's most abundant source of energy and, unlike fuel sources such as oil, one that will never run out.

mount of solar energy intercepted by Earth is about 170 trillion kW, an amount 5,000 times greater than the total of all other energy inputs

In 2002 about 40% of U.S. carbon dioxide emissions stem from the burning of fossil fuels for the purpose of electricity generation. Coal accounts for 93 percent of the emissions from the electric utility industry. US Emissions Inventory 2004 Executive Summary p. 10 Coal emits around 1.7 times as much carbon per unit of energy when burned as does natural gas and 1.25 times as much as oil. Natural gas gives off 50% of the carbon dioxide, the principal greenhouse gas, released by coal and 25% less carbon dioxide than oil, for the same amount of energy produced. Coal contains about 80 percent more carbon per unit of energy than gas does, and oil contains about 40 percent more. For the typical U.S. household, a metric ton of carbon equals about 10,000 miles of driving at 25 miles per gallon of gasoline or about one year of home heating using a natural gas-fired furnace or about four months of electricity from coal-fired generation.