NASA's Opportunity Mars rover has run into a sandy snag. All of its six wheels have sunk in deep into a large ripple of soil. Rover operators are optimistic they can extricate the robot from its ...

In 2011, Matt Mina spent three hours digging a deep, 6-foot hole at 54th street in Newport Beach when the sand collapsed around him and buried him. No one knew if Mina – who was under for 10 ...