Earned run average, abbreviated ERA, has long been one of baseball's most recognizable statistics, signifying the number of earned runs that a pitcher surrenders per nine innings. Major League ...

This summer, battle lines were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 by 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. So, which answer is right?

As its name suggests, the nine-banded armadillo is encased in nine bands of armorlike plate. When alarmed, it curls into a nearly impenetrable ball or jumps straight up into the air. It spends much of ...