As a child, Rebeca Quiñonez-Piñón wondered where monarch butterflies stop for a meal and a night's rest on their long migrations across North America. Now she and other scientists are attaching tiny tracking devices to hundreds of butterflies to find those critical stopover locations before they disappear. Swarms of dazzling orange-and-black monarchs use environmental cues to travel some 3,000 miles (4,800 kilometers) from as far as southern Canada to spend the winter in forests of oyamel a...

WASHINGTON (AP) — The stakes in Tuesday's election — which party will control Congress — are crystal clear. But when that will be known is impossible to say. The Associated Press will be calling races in all 435 House districts and the 35 Senate contests that are up for election this year. Control of the House depends on which party reaches 218 seats. Currently, 219 members caucus with Republicans, just one more than the minimum needed for a majority when all seats are filled. There are...

As a child, Rebeca Quiñonez-Piñón wondered where monarch butterflies stop for a meal and a night's rest on their long migrations across North America. Now she and other scientists are attaching tiny tracking devices to hundreds of butterflies to find those critical stopover locations before they disappear. Swarms of dazzling orange-and-black monarchs use environmental cues to travel some 3,000 miles (4,800 kilometers) from as far as southern Canada to spend the winter in forests of oyamel a...