• Cow dung cakes left to dry out on the wall of a house in Allahabad, India, Friday, Oct. 2, 2015. Cow dung cakes are popularly used as fuel for cooking in rural India. India plans a fivefold boost in renewable energy capacity in the next five years to 175 gigawatts, including solar power, wind, biomass and small hydropower dams. (AP Photo/Rajesh Kumar Singh)

    India vows to cut carbon intensity in Paris pledge

    NEW DELHI (AP) — India’s long-awaited pledge for a global climate pact shows how the world’s No. 3 carbon polluter is making significant efforts to rein in the growth of emissions linked to its fast-surging demands for energy, analysts said Friday.

  • Environmental Protection Agency (EPA) Acting Assistant Administrator for Air and Radiation Janet McCabe, testifies on Capitol Hill in Washington, Tuesday, Sept. 29, 2015, before a Senate Environment and Public Works Committee hearing on “Economy-wide Implications of President Obama's Air Agenda.” Facing a court-ordered deadline, the Obama administration is preparing to finalize stricter U.S. emissions limits on smog-forming pollution linked to asthma and respiratory illness. (AP Photo/Manuel Balce Ceneta)

    EPA set to tighten smog limits as business gears for fight

    WASHINGTON (AP) — The Environmental Protection Agency announced new rules Tuesday to reduce toxic air pollution from oil refineries by forcing operators to adopt new technology that better monitors and controls emissions.

  • In this July 28, 2015, photo, electricians Adam Hall, right, and Steven Gabert, install solar panels on a roof for Arizona Public Service company in Goodyear, Ariz. Traditional power companies are getting into small-scale solar energy and competing for space. The emerging competition comes as utilities and smaller solar installers fight over the future of the U.S. energy system. (AP Photo/Matt York)

    Big utilities enter market for small rooftop solar

    ALBUQUERQUE, N.M. (AP) — Traditional power companies are getting into small-scale solar energy and competing for space on your rooftop.

  • In this Wednesday, July 29, 2015 photo, Jason Dadakis of the Orange County Water District walks past part of the water filtration system at their water treatment plant in Fountain Valley, Calif. Orange County's myriad efforts to ensure its taps keep flowing can serve as a model for other communities across the nation where water is in short supply. (AP Photo/Chris Carlson)

    Orange County offers model for places without enough water

    FOUNTAIN VALLEY, Calif. (AP) — Orange County’s natural water supplies come from just three sources: limited rain, a single unreliable river and aquifers.

  • In this Tuesday, Sept. 1, 2015 photo, Ken Gibbons, a graduate research assistant at the University of Toledo Lake Erie Center, holds a sample of algae from Lake Erie in a lab in Oregon, Ohio. Algae blooms in Lake Erie, fed by agriculture runoff and overflowing sewer pipes, have become so toxic that they shut down Toledo's water system for two days in the summer of 2014 and have the city looking at spending millions to avoid a repeat. (AP Photo/Haraz N. Ghanbari)

    Cities bear rising cost of keeping water safe to drink

    TOLEDO, Ohio (AP) — Standing at the edge of the Great Lakes, the world’s largest surface source of fresh water, this city of 280,000 seems immune from the water-supply problems that bedevil other parts of the country. But even here, the promise of an endless tap can be a mirage.

  • In this Wednesday, July 29, 2015 photo, Des Moines Water Works employees walk past water bubbling through a hole in a street following a water main break in Des Moines, Iowa. After decades of keeping water rates low and deferring maintenance, scores of drinking water systems built around the time of World War II and earlier are in need of replacement. (AP Photo/Charlie Neibergall)

    Drinking water systems imperiled by failing infrastructure

    DES MOINES, Iowa (AP) — Deep inside a 70-year-old water-treatment plant, drinking water for Iowa’s capital city is cleansed of harmful nitrates that come from the state’s famously rich farmland.

  • Saturday, September 26, 2015

    France fires first airstrikes on extremists in Syria, president’s office says