U.S. concerns about the potential for cyber-attacks on critical infrastructure extended to the American electrical power grid on Wednesday and experts pointed the finger anew at Chinese hackers, among others.

Steps President Barack Obama has taken on climate and clean energy have shown that the United States is getting ready to lead the world in fighting global warming, a White House official said on Tuesday.

Atlanta: Traces of a chemical used in rocket fuel were found in samples of powdered baby formula, and could exceed what

A consortium of private investors that sought to build high-voltage electricity transmission lines to carry power from renewable sources upstate to New York City said on Friday that it was suspending its efforts.

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Researchers who have trained a tiny virus to do their bidding said on Thursday they made it build a more efficient and powerful lithium battery.

They changed two genes in the virus, called M13, and got it to do two things: build a shell made out of a compound called iron phosphate, and then attach to a carbon nanotube to make a powerful and tiny electrode.

U.S. environmental groups on Wednesday published online maps of the American West with vast areas that they said should be off-limits for renewable energy projects begun by the Obama administration.