BBC Four: Bridging the Gap: How the Severn Bridge Was Built
Liz Bonnin marks the 50th anniversary of the construction of the Severn Bridge in a Timeshift special telling the inside story of its design and construction. As the motorway link between England and Wales, the Severn Bridge was described as `the most perfect suspension bridge in the world', and Liz reveals how its unique, slim-line structure came about by accident.
Documentary examining what would happen to a gas cloud that strayed within the gravitational reach of a supermassive black hole in the centre of the Milky Way. Across the globe, telescopes were trained on the heart of Earth's galaxy in the expectation of observing the cosmic spectacle for the first time in history.