The season is on dvd and the dvd case says it was release in 2010
Witness the beauty and destruction of the biggest light show on Earth. State of the art high-speed cameras capture lightning for the first time, on a journey from the US to Venezuela and equatorial Africa.
Witness the awesome beauty and power of these amazing storms. See the most spectacular footage of twisters ever shot, along with the stories of people whose lives have changed forever after encountering these mega-storms.
Witness the destructive power of water, when floods strike without warning. See it all up-close - from the overwhelming storm surge of Hurricane Katrina, to the destructive landslides in Venezuela, to the misery caused by the Mississippi River floods.
From calm waters, these gigantic storms gain energy and momentum, often generating vast amounts of catastrophic force capable of laying waste to entire regions. The storm of 1900 destroyed Galveston, Texas, and remains the United States' deadliest natural disaster on record.
Witness the devastating power of an avalanche, from cameras placed directly in the path of descending snow. Stunning special effects recreate the unimaginable horror of the worst avalanche disaster in US history.
See the deadliest volcanoes on the planet. Special effects take you inside some of the world's most famous eruptions. With spectacular new footage of lava rivers, superheated flying rocks, torrents of boiling ash and lethal mudflows.
Every trip on the Earth's oceans is a potential battle with nature. Witness the awesome forces that can punch a giant hole in a supertanker, capsize any size ship, and leave you fighting for your life on the open seas, thousands of miles from help.
Take a journey into the heart of the planet's most furious snowstorms, and feel what it's like to try to survive the sub-freezing temperatures, howling winds, and blinding snowfalls.