Gravest Challenge of the 21st Century May Be Disease

Earthquakes and hurricanes can devastate an entire country in just moments. Global warming could gradually raise sea levels, wreaking havoc on the climate and on people's way of life. And with these potential disasters may come an even more insidious menace, one that could silently sneak up on a population and has the potential to kill thousands, even millions of people in a single strike: disease. "One of the real challenges we may face in the future is a new disease that sweeps across...Full Story