About four decades ago, Julius Axelrod proposed that reuptake is an important mechanism for inactivating neurotransmitters. The genes that code for the transporters that are responsible for monoamine ...

The frozen edges of Antarctica are less stable than they appear. Beneath the wide, seemingly immovable shelves of ice, the ocean is at work. Currents carry heat into hidden cavities, silently ...

Integral outer membrane receptors for iron chelates and vitamin B 12 carry out specific ligand transport against a concentration gradient. Energy for active transport is obtained from the ...

Is innovation inherently a hit-or-miss endeavor? Not if you understand why customers make the choices they do. by Clayton M. Christensen, Taddy Hall, Karen Dillon and David S. Duncan For as long as we ...

The next great leap in data processing and computing could come in space, and it could come sooner than expected.