Credit: China Lunar Exploration Program/China National Space Administration. HELSINKI — China’s Yutu-2 rover, part of the first ever mission to land on the far side of the moon, may have made ...

Japan’s population is the oldest in the world, with a third aged over 65, and one in 10 aged over 80, due to a combination of low fertility rates and high life expectancy. This has a direct ...

Over time, acids can erode tooth enamel permanently. You may think this means you should immediately brush your teeth to remove the acids. However, the American Dental Association (ADA) recommends ...