BHP, the world's biggest mining company, has taken another step in the push to slash emissions across its global supply chain, with a new goal for suppliers and shippers to be carbon-neutral by 2050. In the latest sign of big emitters responding to the escalating pressure on climate change, BHP announced expansion of its existing goals to lower indirect carbon footprint, known as Scope 3 emissions, by requiring other participants in its value chain to achieve net-zero. However, BHP’s new goals have drawn immediate criticism from...