brown gas
n.— «Besides saving gas money, using what is called “brown gas” makes the car drive smoother, cleans the engine and is better for the environment, Bogue said.…Under his hood, Bogue filled six quart-sized jars with water and baking soda, covered them with vacumn-sealed plastic lids, installed a charcoal filter and connected it all with tubes to the car’s air intake system.…Besides saving gas money, using what is called “brown gas” makes the car drive smoother, cleans the engine and is better for the environment, Bogue said.» —“Baking soda boosts mileage” by Karen McIntyre-dn Daily News (Red Bluff, California) May 7, 2008. (source: Double-Tongued Dictionary)
Further reading
Some people work hard to lose their accent in order to fit in. Others may be homesick for the voices they grew up with and try to reclaim them. How can you regain your old accent? Also, a compelling book about scientific taxonomy shows how humans...
Diamond dust, tapioca snow, and sugar icebergs — a 1955 glossary of arctic and subarctic terms describes the environment in ways that sound poetic. And a mom says her son is dating someone who’s non-binary. She supports their relationship, but...
Still a scam. It takes more energy to make the gas than it gives off when burning.