$ERAO The United States sits atop tremendous natur

$ERAO The United States sits atop tremendous natural resources. Several studies have shown that recent innovations, particularly combining hydraulic fracturing with horizontal drilling, have unlocked vast new supplies of domestic natural gas that are plentiful enough to provide 100 years of supply at current demand levels. The challenge is that much of the United States' onshore natural gas resources are locked away in difficult-to-reach formations.