Net-zero emissions world possible - but only with carbon capture and storage: Shell

Singapore

IT is technically feasible to have a world with net-zero greenhouse gas emissions - as long as there is also a system to offset existing emissions, such as through carbon capture and storage (CCS) technologies.

This is the conclusion Royal Dutch Shell drew in a recently-released report outlining the choices and challenges the world is facing in meeting the climate-change challenge.

In CCS, carbon dioxide is collected, transported and stored underground. This stored gas has already been put to uses such as the enhancing of oil recovery from oilfields, but work is needed to scale up the technology.

Shell's head of scenarios Jeremy Bentham said of CCS at a recent briefing in Singapore: "It's a key technolog…