NASA has many detectives looking for clues to solve a mystery, like "science detective" Monsi Roman. She is making sure the water and air on board the International Space Station are safe for the astronauts who live there.
Think small. No, smaller than that -- think Nano small! Shrunk down to the "nanoscale," you would see the atoms that everything is made from AND be able move them around. Nanotech scientists make amazing new devices by moving atoms and molecules around.