Scientific American Magazine

By analyzing previously overlooked fossils and by taking a second look at some old finds, paleontologists are providing the first glimpses of the actual behavior of the tyrannosaurs

Their teeth reveal aspects of their hunting and feeding habits

The brute--it was a tyrannosaur-- got me by the leg. He shook me loose, tearing off the leg at the knee, and he didn't see where the rest of me fell. I tied up the stump and crawled away.

Once little more than a futile hope, some restoration of the injured spinal cord is beginning to seem feasible

The U.S. Department of Energy's high-tech plan to replace nuclear testing with elaborate 3-D computer simulations is seriously flawed

Science and religion are engaging in more active dialogue and debate, but a survey suggests that scientists' beliefs have changed little since the 1930s, and top scientists are more atheistic than ever before

Testing the limits of vocal ingenuity, throat-singers can create sounds unlike anything in ordinary speech and song--carrying two musical lines simultaneously, say, or harmonizing with a waterfall

Did the solar system always look the way it does now? New evidence indicates that the outer planets may have migrated to their present orbits