Sci is over at Scientific American today, talking about a new paper on aging in mice. It shows that a particular cytokine, CCL11, may be responsible for some of the effects of aging like decreased neurogenesis in the brain, and decreased cognitive performance. And it's got parabiosis. Because OMG I didn't even know people still did that! And it WORKED!
And if you'd like to discuss the post, but don't want to register with SciAm, go ahead and comment here! I'll be monitoring both threads.