Rail

Extending high-speed rail beyond Birmingham would increase emissions benefits fourfold, but savings dependent on a green energy system

Will Nichols reveals how the Swedish capital is awash with advanced green technologies that authorities hope will render it carbon neutral by 2050

Will Nichols finds out how a building heated by tapping into a Swedish subway station has sold for €200m

The government talks the talk, but has a lot of work to do to catch up with Europe, argues Will Nichols

Think tank IPPR says war on motorists is a "myth" as fare rises vastly outweigh increases in the cost of car ownership

Inflation update raises prospect of 6.2 per cent increase to rail fares, as transport secretary hints at move to hold down price hikes

Nick Clegg says government's £9.4bn programme of upgrades offers greener alternatives to cars and planes

High-speed line based on the kind of 'unrealistic assumptions' that led to taxpayers funding HS1 to the tune of £4.9bn

Workers have installed half of a planned 4,400 solar panels on Blackfriars bridge

Prime minister slammed for "weak" reply to question over whether it will honour a manifesto commitment ruling out a third runway