Dinosaur Feathers Scientific American 2883 1st Edition Scientific American by Scientific American instant download after payment.

The Search for Dark Matter DAVID B. CLINE
The dynamics of galaxies suggests that an invisible, exotic form of matter abounds  all around us. Physicists are laying traps to capture these intangible particles.
Dismantling Nuclear Reactors MATTHEW L. WALD
The unsolved problem of how to decommission nuclear power plants looms.
The Maine Yankee reactor is a case study in the technical, environmental and economic complexities.
Restoring Aging Bones  CLIFFORD J. ROSEN
Osteoporosis can cripple, but an appreciation of how the body builds and loses bone is leading to ever better prevention and treatment options.
Digital Entertainment Jumps the Border HARVEY B. FEIGENBAUM
New technologies challenge the restrictions on the viewing of American television shows and films in other countries.
Which Came First,the Feather or the Bird? RICHARD O. PRUM AND ALAN H. BRUSH
Feathers originated and diversified in dinosaurs before birds or flight evolved.
Bugs in the Brain ROBERT SAPOLSKY
Some microorganisms can manipulate neural circuitry better than we can.