Tick-Tock

I've mentioned before that researchers believe there is some kind of connection between circadian rhythms and bipolar disorder, that our internal clocks are somehow different from the rest of humanity's. I believe they are right--and so do these smarty-pantses who wrote this study in Science. They claim that they've isolated a protein receptor that drives human internal clocks. What's more, said receptor is sensitive to Lithium. It's basic research so it's years out from meaning anything very practical, but it's still very interesting.