At two miles wide and with wind speeds of more than 350 mph, a super tornado would reduce downtown Dallas to a war zone within minutes. Scientists say it could happen.
Beneath the boiling surface of the sun lies a force that could throw the modern world back to the Stone Age. With only hours to prepare, a New York City engineer struggles to convince the mayor to take action.
The Pacific breeds the biggest and most powerful hurricanes in the world. So far, the seven million inhabitants of Hong Kong have escaped a direct hit.
We saw what happened to New Orleans after the sea breached its levies. Could the same thing happen to London? The city is well protected against the power of a storm surge, but there is one weakness.
There is a point at which a wildfire becomes unstoppable, and a phenomenon is born that can destroy anything in its path. For the men and women working at the forefront of fire science, the nightmare is about to begin.
It happened more than a decade ago: an ice storm brought the Canadian city of Montreal to its knees. Scientists now believe there is far worse to come.
This feature is only available for subscribers. Please contact your EnhanceTV administrator or email firstname.lastname@example.org