Steve Caplin marvels at the latest developments in gadgets (and gizmos), discussing smart bandages, shopping trolleys that can detect irregular heartbeats and warn of potential strokes, aluminium-ion batteries that charge 10 times faster, concrete batteries that can be incorporated in buildings, how to power cars and jets of the future with explosions, earbuds that are also hearing aids, conspiracists who cut off an area's broadband because they thought "5GHz" was the same as "5G" and JCB's machine for repairing a pothole in only 8 minutes.
