Solar Radiation Management (SRM) is one of the two main forms of geo-engineering, and refers to technologies that aim to combat global warming by reflecting a small percentage of the sun's energy back into space.
Proposed SRM projects include artificially seeding clouds to reflect energy back in to space and launching orbiting solar mirrors.
Critics claim such proposals are unproven, distract from the urgent need to reduce carbon emissions, and would fail to address the ocean acidification that results from increased concentrations of carbon dioxide in the atmosphere.
However, a 2009 report from the Royal Society warned that geo-engineering techniques could represent the only way of curbing dangerous levels of climate change and as a result investment in R&D should be increased.
As cities propose ambitious climate and air quality legislation a battle is brewing between the regions and Westminster
The 1 Year Fix and Drive tariff offers EV owners free power to cover 8,000 miles a year of driving
Delivery service currently covers a radius of 1.5 miles with a view to expanding next year