President Trump has signed tariffs on steel and aluminum into effect, and perhaps started a global trade war. The action received fierce criticism from his own party, with many Republican lawmakers speaking out against what they see as a tax on US businesses. The base metals markets haven't...

Records for renewable energy consumption were smashed around the world in 2017. View the high-resolution version of today’s graphic by clicking here. Looking at national and state grids, progress has been extremely impressive. In Costa Rica, for example, renewable energy supplied five...