Growing population of ruminants such as sheep and cattle is biggest human-related source of the greenhouse gas

Airports Commission shortlists options for south-east England including expansion at Heathrow and Gatwick airports

WWF analysis shows business flights have shown a modest recovery since the financial crash, but are still below 2000 levels

New maps from Environment Agency reveal level of risk to properties – including No 10 Downing Street

Interim report from airports commission set to announce a shortlist of options for expansion in the south-east

Chair of Commons energy committee warns of danger of having 'opened the door' to cutting environmental programme

Labour accuses PM of secret deals with big six firms, while charity says cuts to green levies will come at expense of poorest

Porsche's hybrid Panamera S with electric motor and petrol engine will get £5,000 off the pricetag, thanks to a public subsidy

UK's green plans dealt blow by shelving of Atlantic Array, which would have powered 1m homes and created thousands of jobs

A green light for new floating platforms off the Scottish coast should help lower the cost of a low-carbon economy