First transmitted in 1983, Horizon traces the spread of a newly identified disease, AIDS, across America. It asks if the seeds of a spreading epidemic had already reached London. Show more
First broadcast: on BBC Two Northern Ireland (Analogue)Latest broadcast: on BBC Two England
Made in 1982 to celebrate the 25th anniversary of the launch of Russian satellite Sputnik, this programme recalls highlights of previous 25 years of space exploration.