China has issued its strongest warning yet about its airlines not participating in the EU Emissions Trading System (ETS).

Running an electric vehicle in China would emit more greenhouse gases than its petrol-fuelled equivalent, according to an expert in emissions reduction projects.

Observers have welcomed the International Maritime Organization’s adoption of a ship efficiency standard, but warned it should be the prelude to deeper actions on dealing with greenhouse gas (GHG) emissions from ships.

The US government could significantly propel investments in the clean energy and energy efficiency sector by following California’s lead in adopting stronger fuel economy and emissions standards through 2025, investment experts said.