engineering progress

NASA JPL engineers explain the final minutes of the Curiosity rover's entry, descent and landing on Mars, which combined aerobraking, a parachute and a skycrane. It lays out the tight sequence of events that all had to work automatically.

Part 1 of an episode of the British educational TV series The Secret Life of Machines, about how vacuum cleaners work and their history. It mixes humor with explanation of household technology.

Jim Browning reverses a scammer's remote connection and discovers CCTV in a Delhi call centre. He gives a detailed look at how a tech support scam operation runs, and he shared the footage with the BBC.