Cement has been called the foundation of modern civilization, the stuff of highways, bridges, sidewalks and buildings of all sizes. But its production comes with a huge carbon footprint. Environmental chemist David Stone was seeking a way to keep iron from rusting when he stumbled upon a possible substitute that requires significantly less energy. Special correspondent Kathleen McCleery reports. Continue reading
In our news wrap Monday, Kenya’s military launched airstrikes on al-Shabab camps in Somalia for a second day. Meanwhile, Muslim political leaders in Kenya denounced the militant group. Also, about 1,800 people were trapped by Islamic State forces in a Palestinian refugee camp in Syria. Palestinian forces fought back and the Syrian military dropped barrel bombs in support of the Palestinians. Continue reading
The United States pledged Tuesday to cut its greenhouse gas emissions up to 28 percent as its contribution to a global treaty aimed at preventing the worst effects of climate change.
WASHINGTON — The Obama administration took steps Wednesday to cut levels of smog-forming pollution linked to asthma, lung damage and other health problems, making good on one of President Barack Obama’s original campaign promises while setting up a fresh confrontation with Republicans and the energy industry.
In June, the Obama administration called for new pollution standards for power plants, and the new EPA administrator, Gina McCarthy, has followed through with a proposal for new rules. Ray Suarez reports on pushback from the coal industry, while Judy Woodruff talks to McCarthy about pollution and energy priorities. Continue reading
In addition to negative consequences caused by overfishing and pollution, coral reefs face another major existential threat: increased acidity from warming oceans. Hari Sreenivasan reports from Florida about the dire outlook for coral reefs, as well as efforts and research to try and save them. Continue reading
For 18 years, the U.N. was intent on cutting global emissions to prevent a rise in the earth’s average temperature of more than two degrees. But new data shows the earth is on track to reach this point of no return. Gwen Ifill talks to National Journal’s Coral Davenport on the implications of rising emissions and temperatures. Continue reading
For the first time, new national educational standards for grades K-12 will link global warming trends to manmade emissions. Part of our Coping With Climate Change series, Hari Sreenivasan looks at the challenges teachers face when covering the topic of climate science in their classrooms. Continue reading
The Environmental Protection Agency unveiled new standards Wednesday to curb mercury emissions from coal- and oil-fueled power plants around the country. Gwen Ifill discusses the announcement with the Electric Reliability Coordinating Council’s Scott Segal and the Natural Resources Defense Council’s John Walke. Continue reading
The Supreme Court has ruled to block a massive sex discrimination lawsuit against Wal-Mart stores. Continue reading