Pyramids

As a surgeon, I find Ben Carson particularly troubling. By pretty most reports, he was a skilled neurosurgeon who practiced for three decades, rising to the chief of neurosurgery at Johns Hopkins. Yet, when he ventures out of the field of neurosurgery—even out of his own medical specialty—he routinely lays down some of the dumbest howlers I've ever heard. For example, he denies evolution, but, even worse, he's been a shill for a dubious supplement company, Mannatech. Worse still, when called out for his relationship with Mannatech in the last Republican debate, Carson lied through his teeth…
What is distance? There's the distance between people, who subconsciously space themselves apart, providing a reliable visual matrix of intimacy. It's no coincidence we use the word "close" to describe our most intimate relationships: to whisper and caress, we draw near to one another, less than six inches apart. For chatter amongst personal friends, the norm ranges from 1.5 to four feet. The more estranged, the farther away we shrink. Social distance for interactions among acquaintances overlaps with the previous category, but ranges outwards to nearly twelve feet. Of course, we don't always…
Check out this awesome video of a computer-controlled swarm of magnetic bacteria building a pyramid out of tiny bricks!!! From IEEE Spectrum, via It Takes 30, the always fascinating blog from Harvard Systems Biology, the department my lab is in!