Things that have gotten my attention at times on a sunny Friday afternoon:
-- John Guardiano declaims against anti-Rand Paul reactions at FrumForum, where he and I write.
-- Stuart Kauffman on NPR on "The Actual, the Possible and What's Real."
-- An absorbing interactive package at (my sometime employer) Scientific American about "12 Events That Will Change Everything."
UPDATE: And the Kauffman piece above leads (though I had to find the link) to a fascinating (notwithstanding density) discussion of "Five Problems in the Philosophy of Mind."