The Eyes Have It

http://www.nytimes.com/2012/02/21/health/aging-of-eyes-is-blamed-in-circadian-rhythm-disturbances.html?_r=1&adxnnl=1&adxnnlx=1329922868-vuxhQ0XaQcqx9QYGTeQccw

Absolutely fascinating!  I love it when someone takes a totally different tack on a question or problem.

(Thanks for the link, Linda!)