Policy

Support for $100bn Green Climate Fund will help overhaul the UN's carbon market and financing for forestry projects

Report questions cost and effectiveness of renewable energy

Agreement broadly welcomed, but business leaders warn there is a long way to go to deliver sufficiently ambitious treaty

BIS official confirms business secretary will outline fresh details on the £3bn bank

Cut Don't Kill campaign says return on investment assumptions show justifications for feed-in tariff cuts are "misleading"

Installations completed after today likely to see long-term incentives halved, but final decision still rests on consultation

Early hours deal promises roadmap to legal agreement, formation of Green Fund, and extension of Kyoto Protocol

Deal still hangs in the balance as negotiations on crucial second text continue

Text leaked to Guardian reveals last ditch efforts to broker deal

Stand-off continues as diplomats prepare to extend summit into Saturday