Everyone knows it’s hard to get college students to do the reading—remember books? But the attention-span crisis is not limited to the written word. Professors are now finding that they can’t even get ...

The sauropod dinosaurs were many things. They were large, they were long, and they were especially enthusiastic plant-eaters. But they certainly weren't agile. At around 80 tons, the most massive ...

Vegetables like carrots and sweet potatoes are rich sources of vitamin A. Eggs, organ meats, and fortified foods offer vitamin A and other nutrients. There are two forms of vitamin A in the diet: ...