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Ethane Pollution
In this Feb. 25, 2015 photo, a drilling rig is seen near Epping, N.D. A team led by researchers at the University of Michigan has found that fossil fuel production at the Bakken Formation in North Dakota and Montana is emitting roughly 2 percent of the ethane detected in the Earth's atmosphere. Along with its chemical cousin methane, ethane is a hydrocarbon that is a significant component of natural gas. Once in the atmosphere, ethane reacts with sunlight to form ozone.(AP Photo/Matthew Brown)
Houston Pollution
FILE - In this June 28, 2011 file photo, an oil tanker is docked at the ExxonMobil Baytown complex along the Houston Ship Channel in Baytown, Texas. Houston's efforts to use local clean air laws to regulate pollution in the home of the nation's largest petrochemical complex were halted Friday, April 29, 2016, by a Texas Supreme Court ruling in favor of energy and chemical companies that claimed the city had overreached. The coalition made up of ExxonMobil Corp. and other companies with nearby refineries and plants had sued the nation's fourth-largest city in 2008 after Houston passed ordinances that required businesses to pay registration fees based on the number and type of pollution sources on each site. (AP Photo/David J. Phillip, File)
Oculus Launch Delays
In this Friday, April 22, 2016, photo, Christian Cantrell, a software engineer and science fiction author, poses for a photo at his high-end computer setup that an Oculus Rift camera will go with, at his home in Sterling, Va. Cantrell pre-ordered the device and is still waiting, despite the fact that the gadgets began shipping weeks earlier. (AP Photo/Pablo Martinez Monsivais)
Yahoo-CEO Severance Package
FILE - In this Jan. 7, 2014, file photo, Yahoo president and CEO Marissa Mayer speaks during the International Consumer Electronics Show in Las Vegas. Mayer will walk away with a $55 million severance package if the company's auction of its Internet operations culminates in a sale that ousts her from her job. The payout disclosed in a Friday, April 29, 2016, regulatory filing consists of cash, stock awards and other benefits that Mayer would get should she be forced out as CEO within a year after a sale. (AP Photo/Julie Jacobson, File)
Current Rotary Club of Colorado Springs president, Maile Foster stands with incoming president, Dennis Shoemaker by one of the Butterflies and Friends butterfly statues at the Pikes Peak Center Thursday, April 21, 2016. The butterflies are sold at a silent auction each year as an annual fund raiser for the Rotary Club of Colorado Springs. CAROL LAWRENCE,THE GAZETTE
Coal Export Review
FILE - In this May 29, 2012, file photo, a train hauling coal to British Columbia heads north out of Seattle between office buildings, condos and the downtown waterfront. On Friday, April 29, 2016, state and local regulators are releasing a sweeping review of a coal export terminal proposed along the Columbia River in southwest Washington. The analysis is expected to study impacts that extend well beyond the facility site in southwest Washington, from global-warming effects of burning the exported coal in Asia to rail impacts as the coal is from the Rockies throughout the state. (AP Photo/Elaine Thompson, File)