Environment

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**FILE** In this image provided by the Centers for Disease Control and Prevention, a photomicrograph of a fresh stool sample, which had been prepared using a 10% formalin solution, and stained with modified acid-fast stain, reveals the presence of four Cyclospora cayetanensis oocysts in the field of view. Iowa and Nebraska health officials said on July 30, 2013, that a prepackaged salad mix is the source of a cyclospora outbreak that sickened more than 178 people in both states. Cyclospora is a rare parasite that causes a lengthy gastrointestinal illness. (Associated Press/Center for Disease Control and Prevention)

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Flying is still the safest form of mass transit. Your odds of being killed in a plane crash are 1 in 11 million.

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Actor Scott Schwartz fires his "Red Rider BB gun" in 1983's "A Christmas Story." (Image: Metro-Goldwyn-Mayer)

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A bus goes up in flames in Bogra, some 120 kilometers (75 miles) north of Dhaka, Bangladesh, on Aug. 1, 2013, after being set on fire by activists in Bangladesh's Jamaat-e-Islami party after the Bangladesh high court disqualified the party from taking part in the next general election. The High Court panel ruled that the country's largest Islamic party’s regulations violate the constitutional provision of secularism. (Associated Press)

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The restored space shuttle Galileo from the 1960's television show Star Trek is unveiled at Space Center Houston Wednesday, July 31, 2013, in Houston. (AP Photo/Pat Sullivan)

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Firefighters walk through an area of exploded propane cylinders in the aftermath of an explosion and fire at a propane gas company, Tuesday, July 30, 2013, in Tavares, Fla. (AP Photo/John Raoux)

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**FILE** New U.S. Environmental Protection Agency Administrator Gina McCarthy delivers a speech at Harvard Law School in Cambridge, Mass., on July 30, 2013. During her speech, the first as the head of the EPA, McCarthy told an audience that curbing climate-altering pollution will strengthen the economy. (Associated Press)

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This frame grab from an Associated Press video shows flames from a gas plant explosion in Tavares City, Fla., Monday, July 29, 2013. A series of major explosions at has injured several workers and left others missing. (AP Photo)

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"We have resources, oil, gas. Surprisingly there is only one American company engaged in gas exploration,” said Liberata Mulamula, Tanzanian ambassador. (Andrew S. Geraci/The Washington Times)

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**FILE** A farm worker prepares a tomato field for planting at K&D Farmers near Oneonta, Ala., on May 10, 2012. (Associated Press)

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Construction vehicles and lots of dirt go on for miles while traffic crawls on Interstate 95 in Northern Virginia while HOT lanes are built near Dumfries. AAA calls the project "an essential fix to help alleviate traffic in one of the worst bottlenecks on the entire East Coast." (Andrew Harnik/The Washington Times)