A new role for cytokinin plant hormones

When plants, including crops, are exposed to environmental stresses such as drought or high salinity, abscisic acid (ABA), a stress-responsive hormone is synthesized to induce a protective response. At the same time, the ...

US detects 'minuscule' radioactivity from Japan

A radiation monitor in California detected a "minuscule" amount of an isotope from Japan's crippled nuclear power plant, officials said Friday, but insisted it was of no concern.

New US anti-pollution standards draw industry fire

US health campaigners Wednesday hailed the announcement of new anti-pollution standards for American manufacturers, but industry leaders condemned the rules for being costly and overly aggressive.

Silver nanoparticles may adversely affect environment

In experiments mimicking a natural environment, Duke University researchers have demonstrated that the silver nanoparticles used in many consumer products can have an adverse effect on plants and microorganisms.

US to limit emissions at new power plants

The US Environmental Protection Agency proposed Friday to limit carbon dioxide emissions from new power plants in a bid to implement President Barack Obama's plan to fight climate change.

Phase 1 of PCB removal on Hudson wrapping up

(AP) -- Crews dredging a polluted stretch of the upper Hudson River this year battled high water, old logging debris and unexpected levels of PCB contamination that slowed progress.

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