HE may be 70 this year, but the legendary documentary photographer Sebastiao Salgado is not about to retire his trusty cameras any time soon.

"I don't know how long I will keep doing this, but photographers live long," says the Brazilian national, with a chuckle. "I knew a lot of photographers who were 85, 90 years old and still going strong. That means I'll probably go on for a while ... it's not a problem of age, it's all in your mind."

In fact, Salgado's latest exhibition, a show of 245 pictures called Genesis, took him eight years of trekking across the globe in search of untouched natural environments in over 30 countries. Genesis premiered at the Natural History Museum in London last April, and has now made its way to the National Museum of Singapore where it will run from tomorrow till July 27.