
It’s true. Mosquitoes prefer biting some people over others and now scientists know why. As it turns out, about 20% of people are especially yummy to mosquitoes. Here’s why.
MIT chemists have printed carbon nanotubes on paper to create a sensor for detecting dangerous gases. The lines are printed on specially treated paper. When an electrical current is passed through the paper, the change in resistance indicates gas molecules that have bound to the printed nanotubes. The test sensor detected small traces of ammonia…
It’s that distinctive earthy, musky scent that occurs after a good rain, and it has a name unbefitting its pleasant smell – “petrichor”. The petrichor odor is distinctive (and difficult to duplicate) because there are several sources/causes for the smell, including the force of the rain striking the soil and storm winds stirring everything up.…