Around the turn of the millennium, Earth’s spin started going off-kilter, and nobody could quite say why. For decades, scientists had been watching the average position of our planet’s rotational axis, the imaginary rod around which it turns, gently wander south, away from the geographic North Pole and toward Canada. Suddenly, though, it made a sharp turn and started heading east. In time, researchers came to a startling realization about what had happened. Accelerated melting of the polar ice s
RUSHVILLE - In the northern hemisphere, the winter solstice occurs when the Earth’s axis is tilted farthest from the sun. What that means for us in the United States is