After Apollo 11 reported back to Earth, there was an explosion of technological advancement. By 1973, cold-fusion was discovered and quickly replaced fossil fuels. The PC is invented in 1974. Because of increased government income from lack of fuel needs, the manned space missions to the Moon are not cancelled and astronauts make it to Mars by 1981. Housing materials are replaced with plastics in 1983, and Steve Jobs goes bankrupt because of lack of interest in the Mac in 1984. In 1985, Back to the Future is released, but the fictional 2015 in the second film is even more advanced.