Is The Universe Out Of Time? - Scientific American (08.2005)

B I O T E C H N O L O G Y
34 Test-Tube Teeth BY PAUL T. SHARPE A ND CONAN S . YOUNG
Manufacturing living replacement teeth will blaze a trail for engineering larger organs while leading dentistry into an age of regenerative medicine.
P A L E O N T O L O G Y
42 The Early Evolution of Animals BY DAVID J. BOT TJER
Tiny fossils reveal that complex animal life is older than we thought—by at least 50 million years.
C O S M O L O G Y
48 Is the Universe Out of Tune? BY GLENN D. S TARKMAN A ND DOMINIK J. SCHWARZ
Observations of the “music” of the cosmos mysteriously differ from theory. Either the measurements are wrong or the universe is stranger than we thought.
I N F O RM A T I O N T E C H N O L O G Y
56 Morphware BY REINHOLD KOCH
Magnetic logic may usher in an era in which computing devices can change instantly from one type of hardware to another.
M E D I C I N E
64 Beating a Sudden Killer BY JOHN A . ELEFTERIADES
New approaches to care promise to save aneurysm patients from catastrophe.
P S Y C H O L O G Y
72 Mindful of Symbols BY JUDY S . DELOACHE
Young children often confuse real items with their symbols. These errors show how diffi cult it is to start thinking symbolically.
I N N O V A T I O N S
78 Nanobodies BY W. WAY T GIBBS
Tiny “nanobodies” derived from camels may treat a wider range of diseases at lower cost than antibodies can.