Also included is the previously unreleased St. Tristan's Sword, a rollicking instrumental recorded during the Led Zeppelin III sessions in 1970. Presence, In Through The Out Door and Coda will each be available July 31 from Atlantic/Swan Song in the following formats: * Single CD - Remastered original album.
The Keeling Curve. The Scripps CO2 measurements at Mauna Loa have been supported for many years by the U.S. Department of Energy (DOE) , and have more recently been supplemented by Earth Networks, a technology company that is collaborating with Scripps to expand the global GHG monitoring network.he Keeling Curve. The Scripps CO2 measurements at Mauna Loa have been supported for many years by the U.S. Department of Energy (DOE) , and have more recently been supplemented by Earth Networks, a technology company that is collaborating with Scripps to expand the global GHG monitoring network.
Mauna Loa is a large shield volcano on the big island of Hawaii  in the US state of Hawaii. Mauna Loa occupies more than half the  island and erupts almost continuously, a â¦ dding to the land area of  the island with its lava flows.