Business Green: Qatar has become the latest Middle East oil producer to signal its interest in the cleantech sector, signing an agreement with the UK’s Carbon Trust that will result in the creation of a new £250m low carbon investment fund. The move, which echoes the Abu Dhabi government’s Masdar project, will see the Qatar Investment Authority invest £150m into the fund, alongside an undisclosed sum from the UK government-backed Carbon Trust. The fund will also look for further investments to take …