Rio Tinto announces $1bn spend to reach net zero emissions by 2050

World's second biggest miner says it will reduce emissions by 15% by 2030, but 'will not set targets for our customers'

Mining giant Rio Tinto says it wants its globe-spanning operations to reach net zero greenhouse gas emissions by 2050 and will spend US$1bn over the next five years to reduce its carbon footprint.

The second biggest miner in the world has also committed to reducing its emissions by 15% by 2030.