PBS NewsHour

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Diesel fuel, used for trucks, jets and other heavy-duty machinery, can be made from just about anything — coal, crude oil, natural gas, plants. And fuel made with a process called Fischer Tropsch burns cleaner than traditional diesel. But the...
Photo by Flickr user e-Magine Art A new study claims pharmaceutical companies may be misusing FDA safety guidelines to block generic drugs from market, costing the health care system more than $5 billion dollars a year. The FDA requires that...
John Németh says he fell in love with the blues as a teenager growing up in Idaho. Decades later, he’s touring to promote his new album, “Memphis Grease.” Video by Frank Carlson and Ariel Min.  The first gigs that blues musician...
Image by Twitter Twitter released the gender and ethnicity make-up of employees Wednesday, and by their admission, there is room for improvement. Men make up for 70 percent of Twitter’s staff. In terms of ethnicity, whites account for 59 percent of...
Palestinians, displaced by the Israeli offensive on the Gaza strip, wait in a corridor at an UNWRA school in Khan Yunis, in the southern Gaza Strip, on July 18, 2014. Photo by Thomas Coex/AFP/Getty ImagesIsraeli forces shelled a U.N.-run school...
Arizona inmate Joseph R. Wood, whose drawn-out execution lasted for an hour and 57 minutes. Photo courtesy of Arizona Department of CorrectionsThe execution of an Arizona man on death row lasted for nearly two hours on Wednesday, before he took his...