President Trump guts Obama-era climate policies 04:20 “Any one technique is not guaranteed to succeed,” said Stuart Haszeldine, a geology professor at the University of Edinburgh who serves on ...

Peter Kelemen, 61, a geochemist at Columbia University's Lamont-Doherty Earth Observatory, has been exploring Oman's hills for nearly three decades.

The Lemont limestone story begins eons before there was a Chicago with a Water Tower and Holy Name Cathedral, both built with locally mined stone that slowly turns from white to yellowish. Four hun… ...