U.S. oil drillers added rigs for the sixth-straight week, marking the longest period of expansion in a year as the shale patch revives from the worst downturn in a generation. Rigs targeting crude ...

America’s shale gas boom hasn’t exactly been booming ... That’s the longest streak of monthly declines in government data going back to 2007.

There have been calls in the UK for a moratorium on extracting gas from shale rock. This is a new form of exploiting gas reserves, which is expected to open up large reserves of energy in China ...