Experts use the latest CGI to examine the possible impact of a three-mile-wide comet hitting Earth. Earthquakes, tsunamis and radiation would lead to millions of casualties.
In 1883, the Krakatoa volcano erupted with immense, destructive force, creating the modern world's first mega disaster. One of the deadliest natural disasters in recorded history, it claimed over 36,000 lives by the tsunamis it triggered.
Every few seconds, a supernova emits jets of deadly gamma rays somewhere in the universe. If one of these gamma ray bursts should happen sufficiently close to the solar system, all life would perish.
As temperatures rise, a global meltdown has begun. From the Andes to the Himalayas to the Alps, glaciers are vanishing.
With three active volcanoes on the `Big Island,' Hawaii is a ticking time bomb. Experts investigate the potentially devastating consequences if they were all to erupt.
Some experts believe that the greatest mass extinction in Earth's history was caused by a gigantic eruption of methane gas, 250 million years ago. Could it happen again?
With space travel becoming a reality and with a planned expedition to Mars, could an alien infection cause a pandemic on Earth and risk the existence of mankind?
Most people don't think of New York City as earthquake country, but it has been shaken by significant quakes in 1737 and 1884. Take a look at the effects an earthquake would have on New York and its infrastructure.
Recent warming trends in seawater and air temperature point to a possible mega-drought in the next thirty to fifty years. Could we be facing a replay of the Dust Bowl of the 1930s on an even bigger scale?
Entomologists try to comprehend and control destructive swarms of locusts that have been plaguing mankind throughout history; American pioneers endure a swarm estimated as being 1,800 miles long and 110 miles wide.
The oil our world runs on won't last forever. In fact, the gap between supply and demand is ever increasing. Experts predict oil will run out sometime in this century. Can we avoid an energy meltdown?
Beneath the downtown area of California's largest city lies the Puente Hills Thrust Fault. Experts investigate the potentially lethal consequences were it to rupture.