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Physics Update
From the Editor
Reference Frame
Letters
More on ‘Why Do They Leave Physics?’: Money Matters, Research and Job Opportunities
Search and Discovery
Mapping the Interstellar Cloud We Live in
The Solar System will soon be abandoned b the warm cloud of atomic hydrogen that surrounds our heliosphere.
The Decreasing Arctic Ice Cover
New studies indicate that the Arctic Ocean's ice cover is about 40% thinner than it was 20 to 40 years ago, and the area of its perennial ice could be shrinking at a rate of about 7% per decade.
What Really Gives a Quantum Computer Its Power?
A closer look at quantum computation experiments in liquid‐state nuclear magnetic resonance raises questions about what's really going on.
Experts Dismiss Doomsday Scenarios for RHIC
A panel o f particle physicists has examined concerns that high‐energy collisions of gold nuclei might trigger the formation of black holes, vacuum instabilities, or voracious strangelets.
Articles
Motile Behavior of Bacteria
E. coli, a self‐replicating object only a thousandth of a millimeter in size, can swim 35 diameters a second, taste simple chemicals in its environment, and decide whether life is getting better or worse.
Retinal Imaging and Vision at the Frontiers of Adaptive Optics
By compensating for the minor, as well as the major, defects in the eye's optics, we can look through the lens to observe retinal features the size of single cells.
Physics and the Information Revolution
Quantum physics holds the key to the further advance of computing in the postsilicon era.