Environment

“The number of earthquakes in Oklahoma has fallen 25% in 2016 compared with a year earlier,” the Wall Street Journal’s Erin Ailworth reports.

Outside Susan Holmes' house in southeastern Oklahoma, visitors are welcomed by an entryway lined with oxygen bottles and a machine that collects and concentrates oxygen from the air.

"I take two inhalers twice a day," Holmes says. "And I have a nebulizer that I use four times a day, and I use oxygen at night."

She says her asthma returned when she moved to Bokoshe, a decaying town of about 500 people that is flanked by old coal mines. The huge pits have now been filled with hundreds of thousands of tons of coal ash.

In California, there is so much solar energy that grid operators have to switch off solar farms. One solution of dealing with the additional power generated is to share the renewable wealth across state borders – but in the West, it's sparking some not-so-neighborly opposition.

Nancy Traweek's job is to balance California's electrical grid at the California Independent System Operator, keeping the lights on for 30 million people. She relies on huge natural gas power plants that put out a steady stream of electricity.

In 2007, Rick Kinder was working for a contractor, building a house in southern Colorado. The workers had just finished putting in all the doors, windows and sealing the house. Kinder and a colleague were working in the crawlspace, hanging insulation.

"And we just heard this big roar and then a big boom, and it threw us against the walls, and it just blew the whole top of the roof off," Kinder says.

A city in India has recorded the highest temperature in the country's history — 51 degrees Celsius, or 123.8 degrees Fahrenheit.

Murari Lal Thanvi told the BBC it was so hot in the city of Phalodi on Friday that his cellphone stopped working. "I was able to switch my mobile phone on after putting a wet cloth on it for about 20-25 minutes."

House and Senate negotiators have agreed on a plan to update a 40-year-old law regulating the safety of chemicals.

Watch the 60 Minutes report on the high incidence of earthquakes in Oklahoma.

Environmental activist Luis Jorge Rivera Herrera has worked to protect a pristine section of Puerto Rico's coastline. Now he's being honored with the Goldman Environmental Prize.

Dam safety is expensive and time consuming. For this Norman dam, who that cost falls to is unclear. In the meantime, the structure continues to leak.

A sample of an Oklahoma prison's drinking water had more than 12 times the allowable amount of lead when it was tested last year - an amount so high that officials question whether it could really be that bad or if the test could have been misleading.

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