Alternative 3 is a hoax documentary television programme, broadcast once only in the United Kingdom in 1977, and later transmitted in Australia, Canada and New Zealand, as a fictional hoax. Purporting to be an investigation into the UK's contemporary "brain drain", Alternative 3 uncovered a plan to make the Moon and Mars habitable in the event of climate change and a terminal environmental catastrophe on Earth. As a potentially disturbing science fiction broadcast presented as fact, Alternative 3 is heir to Orson Welles' radio production of The War of the Worlds.