US company unveils biodegradable plastic binding agent made from 40 per cent carbon dioxide

New guidelines to ban use of "green" and "eco" in adverts where the terms are not backed by full product lifecycle analysis

Carbon labels represent a great way of forcing firms to face up to their supply chain's carbon footprint. But how do these labels work and which one will win out in the end? Danny Bradbury investigates

Attempts to establish climate change as a legal threat to endangered species could yet give environmentalists the tools they need to revamp US carbon legislation. Danny Bradbury investigates

Firm behind high profile carbon scrubbing technology plans to shun carbon credits in favour of selling captured CO2 for use in everything from dry ice to fizzy drinks

Every renewable energy in the world is chasing after "grid parity", but what does the term actually mean and when will it be achieved? Danny Bradbury investigates

US study claims metropolitan areas emit significantly less carbon on a per capita basis than rural communities

EPA air quality standards are being challenged in the US courts amid accusations of politically-motivated meddling

191 countries back moratorium on large-scale ocean iron fertilisation projects

But critics claim President Bush's hydrogen strategy ignores renewable energy component