Sink your teeth into today's top stories from around the globe.

• Want to know a juicy secret? Watermelon can lower your risk of heart attack. - Dawn.com

• MIT researchers have finally figured out how to get the last drops of ketchup from the bottle. Science! - NPR

• Is cleanliness next to Yelp-liness? Some of the dirtiest restaurants still rank favorably among Yelpers. - NY Times

• Pore over this Vietnamese coffee tutorial. - Gawker

• Take a picture, it'll last longer: Chefs weigh in on the pros and cons of photography in restaurants. - Eater