WASHINGTON -- Federal regulators are six months into a wide-ranging investigation of U.S. oil markets, with a focus on possible price manipulation.

In fact, small farms are the most productive on earth. A four-acre farm in the United States nets, on average, $1,400 per acre; a 1,364-acre farm nets $39 an acre.Organic fruits and vegetables contain 40 percent more nutrients than their chemical-fed coun

Environmental campaigners in Bristol have joined a new movement aiming to cut down on the use of plastic carrier bags. A group called Minx, based in Bedminster, is part of a global network making bags from recycled fabric and handing them out to shopper

Construction resumed on a four-lane highway near the Hill of Tara in central Ireland. Tara, which has been described as Ireland's equivalent of Stonehenge, was named one of the 100 most endangered sites by the World Monuments Fund this year.

The last 20 years have seen diminishing returns in crop yield in response to increased application of fertilizers, which cannot be completely explained by current ecological models. The environmental consequences of synthetic chemicals compromising symbio

The principal objections to the proposition that organic agriculture can contribute significantly to the global food supply are low yields and insufficient quantities of organically acceptable fertilizers. We evaluated the universality of both claims.

The crisis of mass honeybee die-off is affecting commercial, not organic, beekeepers. Honeybee die-off, or "Colony Collapse Disorder," is a frightening event given that bees pollinate one-third of our food supply. Why are organic bees OK? Report:

It is Europe's first commercially operating power station using the Sun's energy this way and at the moment its operator, Solucar, proudly claims that it generates 11 Megawatts (MW) of electricity without emitting a single puff of greenhouse gas.

In a crystal-clear sign that solar is finally going mainstream, Miami-based Lennar recently announced that photovoltaic solar energy systems will be standard features in every house it builds in the Sacramento and San Francisco Bay areas.

Burger King is buying eggs and pork from suppliers that raise cage- and crate-free animals, a U.S. animal-rights advocacy group said Wednesday.