Paying for the European Green Deal

<div>The European Commission has presented its Just Transition Fund to help regions still dependent on fossil fuel as they move towards green energy. But where does the money come from and is it enough to make Europe carbon neutral by 2050? Should the EU re-write its fiscal rules to encourage sustainable investment? And should environmentalists be optimistic? Nicholas Barrett asked Simone Tagliapietra and Grégory Claeys.</div>