The Commission's proposal on the certification of Carbon Dioxide Removals (CDR) could be a milestone of EU climate policy making. It can put the EU on the right track – with a watertight CDR definition, and a firewall between removals and reductions; or the wrong track – dubious low-impact carbon removal schemes that pretend to offset what cannot be offset. As the integrity of EU climate policy is at stake, the EU cannot afford to take the wrong turn, writes Nils Meyer-Ohlendorf in the EU Observer.