LONDON, Jan 9 (Reuters) - (This Jan 9 story has been updated to fix the hyperlinks in paragraphs 1 and 3) OPEC's oil output fell in December due to lower supply from Iran and Venezuela, which offset ...

OTTAWA, Jan 6 (Reuters) - Canadian crude oil is low risk and will stay competitive even if output in Venezuela rises after the U.S. capture of President Nicolas Maduro, Prime Minister Mark Carney said ...

Objective To evaluate systematic reviews of randomised controlled trials (RCTs) on the effects of exercise on general cognition, memory and executive function across all populations and ages. Methods ...