SIOUX CITY | As the Hard Rock Hotel & Casino Sioux City prepares for its last outdoor concert of the season, organizers say they've found a winning strategy by presenting an array of musical genres.

SIOUX CITY -- Hard Rock Hotel & Casino announced Monday that rock bands Counting Crows and Live will perform at Battery Park on Sept. 15. Tickets go on sale at 10 a.m. Friday at ...

A Silicon Valley startup is developing a hot rock battery that could be the next big thing in energy storage — and it’s coming to Europe. The giant brick toaster is the brainchild of San ...

Scientists have discovered oxygen-generating ‘battery rocks’ on the ocean floor that could challenge long-held beliefs about the origins of life on Earth — and make a strong case against deep-sea ...

DTU researcher Mohamad Khoshkalam has invented a new material based on rock silicates for a solid-state electrolyte that has the potential to replace lithium in future electric car batteries. Photo: ...