The climate crisis doesn’t need to be all doom and gloom and signal an end to modern life as we know it, according to the entrepreneur behind Scotland’s first and only biorefinery.

Professor Martin Tangney, founder and president of start-up firm Celtic Renewables, says he’s fed up with the doomsday scenario and being told all the things we can’t do if we want to tackle greenhouse gas emissions.

The microbiologist believes there is a “positive spin” for a green future.

It’s about growing the circular economy, where nothing goes to waste, and moving away from fossil fuels to biological technology.