PBS NewsHour

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Scientists at the Center for Chemical Evolution are breaking apart early molecules to determine how RNA and DNA formed. Courtesy Science Nation/National Science Foundation How did life on Earth begin? It’s one of the biggest unanswered questions in...
Marijuana is a pungent plant. After Colorado legalized recreational marijuana in January, cannabis growers and retailers who had previously only sold medical marijuana began to move into the recreational business. To learn more about how the...
Feed corn at the John N. Mills & Sons farm in Hanover and King William Counties of Virginia. Photo by Lance Cheung/USDAWASHINGTON — The Agriculture Department has approved the use of genetically modified corn and soybean seeds that are resistant...
Townhouses on the Upper East Side of Manhattan. Photo by Flickr user aidaneus. For 29 years now, Paul Solman’s reports on the NewsHour have been trying to make sense of economic news and research for a general audience. Since 2007, our Making Sen$e...
Listen to the AudioRICK KARR: Marijuana grower and retailer Andy Williams can barely keep up with the demand for his product these days. He says he can’t imagine a more exciting and lucrative industry to be in right now. But the buzz is all coming...
City workers wear green t-shirts warning of Ebola as they prepare to clean the streets in the centre of the Liberian capital Monrovia on September 6, 2014. Photo by Dominique Faget/AFP/Getty ImagesThe entire country of Sierra Leone will shut down...