Mike Dudas, a metals and mining analyst at Vertical Research, talks about copper's hot streak and mining companies' earnings. Ward McCarthy, the chief financial economist at Jefferies, provides an outlook for the Fed balance sheet. Jess Shankleman, a renewables reporter at Bloomberg in London, talks about news that the U.K. will ban the sale of fossil fuel cars by 2040. Finally, Shira Ovide, a Bloomberg Gadfly columnist covering technology, discusses the big tech earnings this week from Amazon, Facebook and Twitter.

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