National Academy of Sciences News

People who have the worst asthma are the ones who suffer from the greatest circadian-induced drops in pulmonary function at night The circadian system is composed of a central pacemaker in the brain

Older women tend to score better than men of the same age on tests of reason, memory and problem solving.

For their research, the scientists analysed radiocarbon dates from Wyoming and Colorado that were recovered predominantly from charcoal hearths, which provide a direct record of prehistoric human activity.