The world’s largest T. rex found to date likely weighed nearly 20,000 pounds during its life.

The pelvic bones of women have been shaped more by random evolution than by natural selection, a new study finds.

Researchers recovered the cells that give rise to bone and cartilage from fetal and adult bone marrow and also derived them from induced pluripotent stem cells.

The Chilean government contends that the remains of a mummified fetus, recently sequenced by US researchers, were exhumed illegally.

Scientists are taking a close look at fish skeletons for inspiration to solve engineering problems. 

Plague-causing bacteria may have been around as early as 5,000 years ago, though a genomic analysis suggests that ancient strains were less contagious.

Comb jellies, soft-bodied marine creatures that swim by beating rows of cilia, may once have had a hard skeleton.