Platinum and silver prices exploded at the start of London trade Thursday, hitting fresh multi-year highs after Chinese Premier Xi Jinping announced new green energy targets for the world's No.1 carbon emissions nation. Gold meanwhile fell for a second session running despite new US central bank policy-maker (and White House advisor) Stephen Miran urging Fed colleagues to slash interest rates in a round of morning TV interviews. Essential in solar energy photovoltaic systems, silver in China had already risen in price for the 5th session running overnight after Xi spoke by videolink to the United Nations climate ... (full story)