Details about the AAMCC who provides an organizational framework for scientists and health care professionals interested in the medical application of chronobiology and chronotherapeutics.

When Space Shuttle Atlantis docked with Mir on May 15, it delivered 64 desert beetles for a circadian rhythm study to understand how the space flight environment changes the body's internal clock.

The National Science Foundation Center for Biological Timing. Tutorials and original papers on biological timing.

Support and providing information to those affected by circadian sleep disorders such as Delayed Sleep Phase Syndrome. Includes links, FAQs, message board and a mailing list.

A look at a stimulating apparatus to help with Seasonal Affective Disorder.

Comprehensive site with symptoms, causes, treatments, and links to further information on DSPS and circadian rhythms.

Consulting on optimizing sports performance via optimizing sleep-wake schedules and biological rhythms.

Work conducted at the Rockefeller University indicates that light can reset the biological clock.

General symptoms of circadian rhythm sleep disorder.

Light products and information on biological clock problems. Jet-lag calculator. Sales worldwide.

A brief report on an eye pigment, cryptochrome, which appears to control mammals' circadian rhythms.

A not-for-profit international organization founded in 1988 which aims to foster research, professional development and clinical applications in the fields of light therapy and biological rhythms.

British Medical Journal Article on circadian rhythms (1998). A clinical review.