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WASHINGTON, Feb. 7, 2017 � Valentine’s Day is nearly here. Whether you’re spending it with your significant other or flying solo, chocolate is often in the mix. But which is the better choice: milk or dark chocolate? Reactions pits the two against each other in a scientific showdown, highlighting research on chocolate’s potential health benefits, flavor, aphrodisiac properties and more. Check out this confectionary competition here: .

Reactions is a video series produced by the American Chemical Öйú365betÖÐÎĹÙÍø and PBS Digital Studios. Subscribe to our weekly series at and follow us on Twitter .

The American Chemical Öйú365betÖÐÎĹÙÍø is a nonprofit organization chartered by the U.S. Congress. With nearly 157,000 members, ACS is the world’s largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.