MUMBAI: Next month, the National Geographic Channel (NGC) has a treat for viewers keen on knowing the reason for natural disasters. It will air a series of specials on tremors and twisters.

The channel kicks things off by examining the Eruption At Pinatubo on 18 September at 10 pm.

On 15 June 1991, Mount Pinatubo in the Philippines blew itself apart. A million people lived in its shadow. Viewers can see what happens when a molten monster breaks free of the underworld.

From 19-22 September, volcanos and earthquakes take centerstage. With the help of footage of lava spewing from Mount Kilauea in Hawaii one special explains how volcanos work. The special focusses on four eruptions that say different things about the phenomenon of volcanic eruptions.

Another episode called Megavolcano tells the story of the volcano which may have caused an ice age which wiped out over 60 per cent of the world's population. It could erupt again.

From 25-29 September at 10 pm the channel looks at the phenomenon of twisters, tsunamis and tornadoes. One episode is called The Super Twisters. In 1974, in one day, 148 tornadoes ripped through the US. The special looks at the havoc that was created and the communities caught up in nature's fury. Another episode looks to unravel the Mysteries Of The Tornado. Tim Samaras has spent his life tracking tornadoes. He gives viewers a picture of what happens inside a twister.