Was appreciating the sun’s power our first cultural achievement? Stephen Dorey/Alamy Stock Photo
AT ROCKEFELLER University in New York, there is a population of fruit flies with no sense of timing. While most members of their species lay eggs in the morning and doze in the afternoon, these mutants live out of sync with normal flies and with each other because they lack a working circadian clock.
These insects belong to Michael Young, who shared the 2017 Nobel prize in…
