Share this on WhatsApp Originally published in January 1967 Credit: Scientific American Advertisement “Petroleum products are being used in an ingenious effort to upgrade submarginal land. In Libya the Esso Research and Engineering Company undertook in 1961 to stabilize 125 acres of shifting sand dunes by spraying them with a low-grade oil. Such dunes usually … Continue reading Spraying Oil on Sand Dunes Helps Trees Grow