While the US has turned to shale gas, Europeans have once again embraced the black stuff, as the cost of coal has plummeted.

BBC: Green energy on the back foot after carbon trading blow

In addition to singing and playing bass, frontman Gene Simmons has turned the band into a merchandising machine, plastering their distinctive black-and-white facepaint on every sort of product imaginable.

FORBES: KISS's Gene Simmons Teaming Up With Angry Birds

Just before the highway's end, we turned into Wai'anapanapa State Park, which has a small black sand beach, and hiked to a cave.

WSJ: Driving the Hana Highway in Maui, Hawaii