3D printing has changed the world. It's allowed the aerospace, medical, automotive, manufacturing and many other industries to customize parts and prototypes in ways they never could before.

Metathesis now allows organic chemists a gentle touch in constructing the most complex of molecules, such as pharmaceuticals and natural products. Yet it continues also to play a major role in ...

In 2005, the prize went to developers of the metathesis reaction, which breaks and makes double bonds between carbon atoms in rings and chains so their subunits can swap to create new molecules ...