One of the most significant contributions in the history of propulsion technology came from a 19th-century engineer named Rudolf Diesel. While his idea was patented in the 1890s, it wouldn't be until ...

Mercury is often found in Mesoamerican tombs in the form of a powdery red pigment called cinnabar, but its liquid form is extremely rare. So it was with some surprise that Sergio Gomez, an ...

Paul Rogers is the Bay Area News Group natural resources and environment reporter. He has covered a wide range of issues for The Mercury News and East Bay Times since 1989, including water, oceans, ...