Distractions were bigger than deals in the first week of United Nations climate talks, leaving a lot to be done, especially on the main issue of money.

A report backed by current G20 leader Brazil proposed a global minimum tax of 2% of wealth for the world's roughly 3,000 dollar-billionaires, to raise about $250 billion a year. Other options could include changing the threshold at which the tax kicks in and the rate at which it is applied.