Author: By Donald S. Clark For years scientists have thought that aging was under the control of a "biological clock"-a cellular function regulating growth and programming cell death. Normal cells divide only a certain number of times before...
Author: by Donald S. Clark Astronomers are looking again. It seems that they can't agree on the age of the universe, which is calculated from the Hubble constant. Last year new measurements were made using the orbiting Hubble telescope focused...
