A study of fossils from the Permian-Triassic extinction event 252 million years ago shows that forests in many parts of the ...

Humans were present in North America 10,000 years earlier than previously thought, according to a new study. Researchers from ...

Further propagation of these discontinuities, possibly speeded up during the late stress relaxation experienced by the stratified massif in Triassic times, led to a regular and closed-spaced ...

Mud never lies,” added University of Arizona archaeologist Vance Holliday, whose new work has turned a century of hypothesis ...