Uncategorized
-
AstronomyTelescope Tuned Up: Back to work for orbiting observatory
A rejuvenated Hubble Space Telescope floated away from the space shuttle Columbia on March 9 after astronauts spent a week renovating the observatory.
-
Health & MedicineStem Cell Success: Mice fuel debate on embryo cloning
In mouse studies, scientists have used a technique called therapeutic cloning to create personalized replacement tissue.
By John Travis -
Health & MedicineEight hours of sleep may not be so great
Sleeping 8 to 9 hours a night doesn't necessarily translate into a longer life.
By Nathan Seppa -
Health & MedicineAlzheimer’s disease vaccine abandoned
Safety concerns forced the shelving of tests of an experimental vaccine for Alzheimer's disease.