Interesting Articles of the Week

Stephen Colbert was right: "Guts" actually do affect our emotional response

MIT is making its entire curriculum available online for free.

Why is a minute divided into 60 seconds, an hour into 60 minutes, yet there are only 24 hours in a day?

How to take a power nap.

Scuba diving without air tanks.

Pot Prisoners Cost Americans $1 Billion a Year.

Tough bug reveals key to radiation resistance.