It’s Sleep Awareness Week, so we’re talking about the part of sleep people usually like the least: the part where the alarm clock wakes us up. Or, in the time before alarm clocks, the part where the local "knocker-up" pounded on the doors to get people out of bed.
There's a new technique that could help people trying to fend off chronic nightmares - and it involves playing "neutral" piano chords at just the right times.
