Bananas, Barcodes and Carbon

Enjoying that cup of coffee? That’ll be 21g of CO2 emissions, please. The sandwich is 40g, the crisps 15g, and the banana 80g. And while 3g for flushing the toilet is thankfully a bargain, washing and drying your hands will cost another 35g. How do I know this? My phone told me. And if David […]