On Our Radar: The Danube Ices Over February 9, 2012, 1:52 pm Ice floes block vast swaths of the Danube River, crippling shipping and commerce as a brutal cold wave worsens in Europe. The river, which is vital for transport, power, irrigation, industry and fishing, is wholly or partly blocked from Austria to its mouth on the Black Sea. Agence France-Presse Beijing plans to reduce air pollution levels by 30 percent by 2020 by phasing out old cars, relocating factories and planting new forests, state news reports say. A federal magistrate in New Orleans rules that lawyers for plaintiffs suing BP and others for damages related to the 2010 gulf oil spill won't be able to introduce some of the corporate defendants" internal e-mails as evidence at trial. Scientists at Cambridge University have developed a new type of solar cell that could harvest 25 percent more energy from the sun than traditional ones. The cell, a hybrid, absorbs red light and harnesses the extra energy of blue light to boost the electrical current. Click Green