Volcanic Rocks can save us from Global warming?

A group of scientists at Columbia has used deep ocean-floor drilling and experiments to show that volcanic rocks off the West Coast and elsewhere might be used to securely sequester huge amounts of carbon dioxide, a greenhouse gas, captured from power plants or other sources. In particular, they say that natural chemical reactions under 78,000 square kilometers (30,000 square miles) of ocean floor off California, Oregon, Washington and British Columbia could lock in as much as 150 years of U.S. carbon dioxide production.