What we're reading: tech startup capital of the U.S.

1.) Why volcanoes are a bad place to dispose of radioactive waste.

2.) Chicago: The next tech startup capital of the U.S.?

3.) Using "neuromarketing," Campbell's changes the design of its legendary soup can.

4.) Real-time sunspot activity data comes to your iPhone and iPod touch.

5.) Ultrasound could one day be used to break up stroke-causing blood clots in the brain.