#HemispHere

In the Northern Hemisphere, days are getting shorter and temperatures are dropping—autumn has arrived. A common sign that winter is coming is trees losing their leaves.…

Monroe Doctrine remains vital as China expands influence in Latin America. Donald Trump's security cooperation and military training efforts aim to counter regional threats.

New research from the University of St Andrews has uncovered a previously unknown process that may have helped drive Earth into past ice ages. Published today (Oct.…

This annual event, which peaks on the night of May 5 into the next morning, comes from the trail of debris left by Halley's comet. It's best viewed from the Southern Hemisphere, but skywatchers in the north can catch a glimpse

From Live Science: Why are some constellations visible for only part of the year?