Scientists at the University of Arizona genetically engineer a mosquito that is immune to a malaria-causing parasite.

They hope it will eventually replace current carriers of the deadly disease.

In a lab, researchers recreate the lungs of a rat.

The ultimate goal: Being able to do the same with human lung tissue that would help sufferers of emphysema or lung cancer.

3M introduces the Filtreteā„¢ Water Station that uses water directly from the tap and filters it into four reusable bottles.

The filter reduces sediment, chlorine and odor from tap water.