This spring's run-up in oil prices is hard to explain on the basis of market fundamentals. It seems to be the result of speculation in the commodity markets.

"An L.A. judge's dismissal of Nicaraguan banana workers' litigation against Dole puts numerous related cases in jeopardy."

Scientists are learning that whales are smarter, and more like humans, than they ever suspected.

"Oil prices briefly fell under $60 a barrel on Thursday after nearly two weeks of uninterrupted declines, as traders and investors acknowledged that a global economic recovery would take longer than hoped."

The two-degree pledge on climate change made by the G8 is nonbinding, hard to translate to a specific level of greenhouse gases in the atmosphere ... and perhaps wishful thinking.

The green tech that many clamor for requires some very exotic mineral ingredients -- and mining them has environmental consequences.

"After one of the longest sunspot droughts in modern times, solar activity picked up quickly over the weekend."

"The world's leading industrial nations tentatively agreed Wednesday to try to prevent global temperatures from rising above a fixed level, after a more far-reaching proposal to slash production of greenhouse gases fizzled... ."

"Major nations have failed to agree to set a goal halving greenhouse gas emissions by 2050, according to a draft document ahead of talks on Thursday -- a setback to efforts to secure a new U.N. climate pact."