In Poland, Pursuing Valuable Energy Deep in the Earth Fuels Dissent Above Ground

The oysters grown and harvested in Drake's Estero -- part of the Pt. Reyes National Seashore, just north of San Francisco -- are the subject of a national controversy that only seems to grow as a plea by an oyster farm to stay in operation gets closer to federal appeals court.

Seattle's Bullitt Center bills itself as the world's greenest office building for its net-zero design and local and sustainable materials. The six-story building generates all its own energy, harvests its own water and manages its own waste on site.

A massive explosion tore through a fertilizer plant near the town of West, in central Texas, on Wednesday injuring more than 100, destroying several buildings, and sending potentially toxic fumes into the air, according to authorities.

The Obama administration announced a proposal requiring two-thirds less sulfur in gasoline and a reduction in other emissions beginning in 2017. Judy Woodruff and Juliet Eilperin of the Washington Post discuss the announcement and why it's getting support from auto manufacturers but opposition from the oil and gas industry.

Edward O. Wilson's "Letters to a Young Scientist" is a book about finding your passion for science and following it faithfully. "Be prepared mentally for some amount of chaos and failure," he writes. "Daydream a lot."

Science correspondent Miles O'Brien talks to scientists, members of the chemical industry and representatives from Pacific Gas and Electric about chromium-6 contamination in American drinking water. What is a safe level for humans to consume and why has the EPA stalled on setting a federal standard?

In Washington state's Puget Sound, scientists have made discovery of a "toxic cocktail," made up of excess rainfall that flows into the nearest body of water, carrying pollutants along with it. Kate Campbell from KCTS-9 in Seattle reports on efforts to prevent that runoff from making it into the sound.

In part one of a two-part series Miles O’Brien travels to Hinkley, Calif., the town featured in the movie Erin Brockovich, for its multi-million battle over contaminated groundwater. O'Brien reports on the investigation into the chemical Chromium-6, the agency that regulates it and industry's influence on the process.

On tonight's NewsHour, Miles O'Brien reports on the decline of Hinkley, Calif., the town featured in the movie Erin Brockovich. Here's the not-so-Hollywood version of what really happened in Hinkley and beyond.

The world's oceans are absorbing carbon dioxide at an unprecedented rate and the resulting acidification is transforming marine ecosystems. Hari Sreenivasan reports on how ocean acidification is already affecting oysters and other shellfish in the U.S.