- Why might spite have evolved? Upon first glance it may not seem a particularly useful survival strategy. But Tom Rees, who writes at Epiphenom, reviews a paper that suggests spite may simply be the inverse of kin-directed altruism, with the same net outcome.
- Want to trick your co-workers into getting more exercise? Travis Saunders, who writes at Obesity Panacea, says, "Place a sign next to your workplace elevator with an arrow pointing to the nearest staircase and see what happens," and writes about an experiment that did just that.
- Might sound alter our perception of smell? Anne-Sylvie Crisinel, who writes at Body in Mind, offers early evidence that it does. And they're called smounds.
- Now for your weekly dose of creepy: Zen Faulkes of NeuroDojo describes the process by which wasps create zombie cockroaches so that the baby wasps can EAT THEM ALIVE. You're welcome.
The views expressed are those of the author(s) and are not necessarily those of Scientific American.