For years, many of us have been finding ways to lower our ‘carbon footprint,’ whether by taking trains instead of planes, eating less meat, or upgrading to more energy-efficient lightbulbs. According to researchers at the Oxford English Dictionary, this year marks a quarter century since the first recorded use of the term in a 1999 edition of the BBC’s ‘Vegetarian Good Food’ magazine. Although it’s helped us understand our impact on the climate, some environmental researchers now think the term has shifted too much of the burden to individuals. They argue we should measure other ways we affect…