How is the total mass of the universe calculated? Bob GiddingsGreen Bay, Wisconsin Calculating the total mass of the universe ...

After years of searching worldwide, paleontologist Kenneth Lacovara found the extinction layer—and thousands of fossils—just ...

Recently, a research team from the Chinese University of Science and Technology achieved a significant breakthrough in the ...

A new analysis suggests that recent extinctions have been rare, limited mostly to islands and slowing. But others argue this is all just semantics.

Neutrinos and antineutrinos are elementary particles with small but unknown mass. High-precision atomic mass measurements have revealed that beta decay of the silver-110 isomer has a strong potential ...