DNA Origami: Folding Molecules Into Structures and Cages
Scientists can now fold DNA strands into precise geometric shapes and hollow containers. We explain how the technique works and what researchers are building with it.
Xenobots and anthrobots: what they are and are not
Small clusters of living cells that move, push things around and even repair themselves. They are a real and strange result — and they are not tiny machines swimming through your bloodstream.