Since 1982, the Alaskan government has sent a check to every resident from an investment fund established with oil revenues. In 2015, when oil prices were high, the Alaska Dividend Fund sent every individual an annual check for $2,072, or $8,288 for a family of four. Nobody is arguing that this annual stipend is enough to live on, or to qualify as a true UBI (especially because it fluctuates with the price of oil), but it’s a proven model for how a government can collect and redistribute revenue. Perhaps, Marinescu says, Alaska could be instructive in how states could put a tax on carbon and use the revenues to boost incomes.