The fierce debate over whether to clone a woolly mammoth has been reignited by a fresh attempt to bring the species back from the dead.

South Korean scientists believe the extinct 'Mammuthus' can be brought back to life using the DNA of an extremely well preserved mammoth found in the Siberian snow.

Insung Hwang, a geneticist at Sooam, the South Korean biotech company working on the project, said this week his team think it is an achievable goal, using the fresh blood samples they have recovered.

"We're trying hard to make this possible within our generation", he told a Channel 4 documentary team who have been charting the project's progress.