Carbon footprints revisited: Air freight doesn't always fly with sustainable seafood

摘要

Everything we produce, buy and eat is under scrutiny: Is it carbpn-smart? Welcome to the carbon-constrained world, where averting the most severe effects of climate change means releasing far less'carbon dioxide and other greenhouse gases. The goodnews is that seafood's carbon footprint generally shines compared to red meat. When Christopher Weber, a research engineer at Carnegie Mellon in Pittsburgh, dug into the local-food, or "locavore," trend and the carbon emissions involved with food miles,he found that replacing a day's worth of red meat-based calories with chicken, fish, eggs or fruits and vegetables cuts greenhouse gas (GHG) emissions just as much as eating an all-local diet.