DNA is blueprint, contractor and construction worker for new structures
DNA is the blueprint of all life, giving instruction and function to organisms ranging from simple one-celled bacteria to complex human beings. Now Northwestern University researchers have used DNA as the blueprint, contractor and construction worker to build a 3-D structure out of gold, a lifeless material. Using just one kind of nanoparticle the researchers built two very different crystalline structures by changing one thing -- the strands of synthesized DNA attached to the tiny gold spheres.
The Republican presidential candidate began his final drive for the White House Thursday with a boost from running mate Sarah Palin and her nomination acceptance speech Wednesday night.
