What are some good vitamins for brain and general health? [more inside]
posted by peregrine81 on Apr 26, 2009 - 6 answers

What is the physical resource inside your brain that gets used up when you focus and concentrate for long hours? How do you beef up the ability to sustain concentrated thought, aside from diet/exercise/sleep? [more inside]
posted by parallax7d on Nov 24, 2008 - 16 answers

Why does our brain perceive tilt-shift photography as tiny little toy models? I'd love to know the science behind this popular effect.
posted by waxpancake on Apr 10, 2008 - 19 answers

I don't think correctly. [more inside]
posted by herbiehancock00 on Oct 23, 2006 - 27 answers