In case you missed it, here is a behind-the-scenes look at how parabolas work. Video by Geoff Shelton. | OK Go

For Bridgerton fans, the Pall-Mall scene is truly iconic! Watch as the cast takes you inside filming Season 2’s most anticipated scene — and find out why so much of it was improvised! | Netflix

Inside Out went behind the scenes during a Tower Bridge lift to find out how it all works. Watch the whole programme on Monday at 7.30pm on BBC One - or catch up on the iPlayer here: http://www.bbc.co.uk/programmes/b0071mkv. | BBC London