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A man receives dental treatment at Care Harbor LA, a free medical clinic in Los Angeles, California, October 31, 2013. Lucy Nicholson/Reuters

The cavity in health insurance coverage: oral health

The absence of comprehensive dental care exacts a toll on millions of Americans in terms of poor health, pain and the social stigma associated with bad teeth.
Where in the world do you put 4.8 million displaced people? Muhammad Hamed/Reuters

Where have 4.8 million Syrian refugees gone?

As part of a collaboration between The Conversation and PBS’s Point Taken, a professor from The Ohio State University examines some common misconceptions about Syrian refugees.
Temelin nuclear power plant, Czech Republic. IAEA/Flickr

How to protect nuclear plants from terrorists

Recent terrorist attacks have heightened concerns about the security of nuclear plants. A former top U.S. nuclear regulator says security is weak at many sites worldwide.