'Biosolar leaf' project targets air pollution on London campus

Scientists say technology can do the work of 100 trees using the surface area of one

The news on carbon dioxide levels in the atmosphere is rarely good. Scientists and campaigners have warned repeatedly that governments are doing too little to bring us back from the brink and that, even if we are seeing reductions, they are nowhere near the levels required to reverse climate change.

But scientists have been working on what they say is the world's first "biosolar leaf", which they claim can mop up carbon dioxide and discharge oxygen into the atmosphere more efficiently than a typical tree.