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The image on the left shows the mouse brain blood vessels before cocaine. The image on the right shows the blood vessels after, revealing that many of the vessels are now darker, which signifies lower blood flow. Photo from Biomedical Optics Express...
File photo of a meeting of ministers of foreign affairs held at NATO headquarters in Brussels on June 25, 2014. Photo by Hakan Goktepe/Anadolu Agency/Getty Images When the leaders of the North Atlantic alliance wrapped up their Chicago summit two...
The giant African snail can eat plaster, stucco and 500 types of plants, including most row crops and citrus, making them a nuisance in places like Florida, where local agencies are trying to eradicate them. Photo by Flickr user Coleg Gwent...
It’s been a runaway treadmill of a summer. If it hasn’t been protests in the Midwest, it’s been planes dropping out of the sky in Ukraine. If it hasn’t been rockets and missiles raining down in the Middle East, it has been border confrontations in...
Watch Video | Listen to the AudioGWEN IFILL: President Obama moved today to tamp down talk of imminent military action against Islamic State fighters in Syria. At the White House, he said his priority is to roll back the militants’ gain in...
Watch Video | Listen to the AudioRELATED LINKSWhat will shape the upcoming meeting between Poroshenko and Putin? Ukraine calls Russian aid convoy a ‘direct invasion’ Amid tensions at Russia-Ukraine border, diplomats push for calm GWEN IFILL: The...