A chemical bond between two metal atoms has been filmed breaking and forming for the first time – something scientists say they only dreamed of seeingA chemical bond between two atoms has been recorded breaking and forming for the first time. Watching this happen in real time “was absolutely unbelievable”, says Andrei Khlobystov at the University of Nottingham, UK, who led the team that recorded it happening.

“We were very excited,” says Khlobystov. “We knew exactly what was happening because we recognised this as a chemical process straight away, …