Many of us have spent time gazing out of the plane window when travelling by air – but it’s doubtful you’ve ever stopped to consider the science behind the glass pane itself.

American Airlines pilot, Captain Steve (@captainsteeeve) uses his TikTok account to offer an insight into life on board his Boeing 777 passenger jets, and his latest video revealed a dark truth about engineering evolution. “Did you ever wonder why the passenger windows are rounded at the edges and not square?” he asked…