Dr. Kenny Broad and his team of divers plunge in to explore the mysterious blue holes of the Bahamas. It is believed that these underwater time capsules formed during the last ice age, the salt water is trapped without oxygen under fresh water in these deep underwater caves.
Tornadoes are classified on the Fujita scale, or F-scale. Most tornadoes that occur around the world can be classified on the lower reaches of the scale – the F0s, F1s or F2s.