On average, an espresso contains around 63 milligrams of caffeine per ounce. Starbucks serves 75 milligrams of caffeine in ...

How do you track a Louisiana black bear? This Wildlife and Fisheries team uses a complicated but curiously low-tech method that involves tampons and donuts.

With so many decaf coffee options on the market, it can be tricky to decide which one to buy, so we sampled eight of them to find out which is worth the price.