Long before forests spread across the continents, before the first animals walked on land and even before the age of dinosaurs, a remarkable process was unfolding beneath Earth’s surface. Deep underground, a series of natural nuclear reactions began inside unusually rich uranium deposits, releasing energy in cycles over an immense stretch of time. Nothing had…

At first glance, Joan R. Ginther’s story sounds almost too extraordinary to be true. The American mathematician, who earned a doctorate in statistics from Stanford University, won four major Texas Lottery prizes between 1993 and 2010, collecting more than $20 million in total. Her repeated success quickly sparked speculation that she had discovered a mathematical…

Scientists exposed bumblebees to low doses of a modern pesticide Scientists exposed bumblebees to low doses of a modern pesticide Scientists exposed bumblebees to low doses of a modern pesticide Scientists exposed bumblebees to low doses of a modern pesticide Scientists exposed bumblebees to low doses of a modern pesticide Bumblebees are among the world’s…

Lake Mead is a man-made lake that lies on the Colorado River, about 24 miles southeast of the city of Las Vegas, Nevada. Formed by the Hoover Dam, it is the largest reservoir in the United States and supplies water to about 20 million people in the states of Arizona, California, Nevada and some in…