This Thursday will be the 25th anniversary of my first day at Friends of the Earth Scotland, so it seems worth looking at whether things are better or worse a quarter century later. The answer is yes and no, writes Dr Richard Dixon. In 1994 average carbon dioxide levels in the atmosphere were just below 360 parts per million, which is about 28 per cent above the levels before humanity started seriously burning fossil fuels. This year that figure is around 412, nearly 50 per cent higher than the pre-industrial levels of 280. Global emissions of climate change gases have increased by 60 per cent, despite the Earth Summit in 1992 agreeing the first plan to stabilise, then reduce, emissions. Of course, emissions have to not only stop rising, they have to actually be reduced to zero before the planet’s temperature stops going up.
Scotsman 6th Aug 2019 read more »