The war turned Vietnam’s lush landscapes into scorched earth. Entire provinces were reduced to rubble, waterways were polluted, forests decimated, and soil rendered infertile by chemicals ...

The threat of nuclear war, whether through the use of a nuclear bomb or dirty bomb, remains a complex and uncertain risk - but one that is being taken more seriously with each passing day ...

The risk of nuclear war is arguably higher than it's been since the 1980s, due to ongoing conflicts and tensions. So what would happen if a nuclear bomb was dropped on New York City?

Almost 90 US B-29 bombers dropped about 6,000 tons of napalm on Kumagaya, Japan, on the night of August 14-15, 1945. Eighty years later, the scars of that American firebombing remain.