At the start of the 20th century, Louis Blaustein, a Jewish immigrant from Lithuania, and his son Jacob drove a horse-drawn wagon through the streets of Baltimore, selling coal oil and kerosene to grocery stores. They eventually grew the business into an oil company that is credited with inventions such as the metered gas pump, the drive-in gas station and the gas tank delivery truck. Today, more than 100 years later, the descendants of Louis and Jacob are using a fortune built on fossil fuels to fund, among other causes, climate justice and environmental groups. The various branches of the family have set up separate charitable foundations but they work together through the Blaustein Philanthropic Group, whose mission statement says the family is “united by roots in Jewish tradition, concern for social justice and equality of opportunity.”