From the 1960s to 1990 Russian psychic Nina Kulagina displayed an apparently impressive range of psychic powers, particularly psychokinesis (the ability to move objects using the mind alone), and was tested by respected scientists and filmed many times. However, she remains a controversial figure and her demonstrations of psychic ability have received criticism from sceptics who believe the films and experiments show clever trickery rather than paranormal powers.Kulagina was only 14 when the Nazis began the siege of Leningrad. Like many Leningrad children she had to become a soldier, and along with her father, brother and sister, she joined the Red Army and was sent into the thick of the action. The conditions during the 900 day siege were appalling. Winter temperature sometimes reached forty degrees below zero, bread rations were about four ounces a day, the water and the electricity were cut off, and the city was devastated by bombs and artillery fire. Nina served on the front line in Tank T-34 as a radio operator, and distinguished herself enough to become senior sergeant. But the fighting came to an end for her when she was seriously injured by artillery fire. Fortunately, she managed to recover and later settled down, married and had a son.