Blame Edison

Researchers from the Harvard
Medical School and Brigham
Women's Hospital, Massachusetts,
US, have found an unlikely scapegoat for all the lazybones found dozing at work: Thomas Alva Edison,
the inventor of the light bulb. In a
study published in the February
issue of Nature, the researchers
reported that normal indoor lights
can reset the human biological
clock, dismantling sleep patterns
and putting people in a permanent
condition of jetlag. Reading or
watching television after sundown,
and being exposed to bright tights
just before sleep essentially slows
down the bio-clocks and moves the
phase of peak grogginess into the
wee hours of the morning.