The 12 worst fires of all time

Fire sweeps through Edo, Japan --

Panic reigns in the Great Fire of London --

Huge blaze leaves Chicago in ruins --

Fleeing fire, Wisconsin townspeople dive into river --

Wildfire scorches millions of acres in Rockies --

Black Dragon Fire roars across China and Siberia --

Summer of fire torches Yellowstone National Park --

Smoke from wildfires chokes Southeast Asia --

Wildfires char Greek forests and farmlands --

California suffers worst wildfire season on record --

Black Saturday bushfires ravage Australian landscape --

"The Beast" rages in Alberta --

Staying safe if there is a fire.