Ten-year-old Jake Herrera and his Los Angeles team run around the diamond as a warmup for baseball practice. Benjamin B. Morris for NPR hide caption

itoggle caption Benjamin B. Morris for NPR

This is a calculated flood map for the city of St. Louis. Water depth goes from deep (dark blue) to shallow (white, light blue). Floodwater can come from the Illinois, Upper Mississippi and Missouri rivers, as well as from heavy local precipitation. Courtesy of Dag Lohmann/Katrisk hide caption

itoggle caption Courtesy of Dag Lohmann/Katrisk

Clocks around the world, like Big Ben, will have an extra second added tonight. Oli Scarff/Getty Images hide caption

itoggle caption Oli Scarff/Getty Images

A plume of steam billows from the coal-fired Merrimack Station in Bow, N.H. in January 2015. Jim Cole/AP hide caption

itoggle caption Jim Cole/AP

A cabbage butterfly caterpillar. For tens of millions of years, these critters have been in an evolutionary arms race with plants they munch on. The end result: "mustard oil bombs" that also explode with flavor when we humans harness them to make condiments. Courtesy of Roger Meissen/Bond LSC hide caption

itoggle caption Courtesy of Roger Meissen/Bond LSC

Travis Driscoll, a medical school applicant from Berkeley, Calif., studies for the revamped MCAT. April Dembosky/KQED hide caption

itoggle caption April Dembosky/KQED

Bite into that bread before your main meal, and you'll spike your blood sugar and amp up your appetite. Waiting until the end of your dinner to nosh on bread can blunt those effects. iStockphoto hide caption

itoggle caption iStockphoto
Stuart Kinlough/Getty Images/Ikon Images