Lithosphere-Asthenosphere boundary Lithosphere-Asthenosphere boundary The Lithosphere-Asthenosphere boundary (LAB) represents a mechanical difference between layers in Earth’s inner structure. Earth’s inner structure can be described both chemically (crust, mantle, core) and mechanically. The Lithosphere-Asthenosphere boundary (referred to as the LAB by geophysicists) lies between Earth's cooler, rigid lithosphere and the warmer, ductile asthenosphere. The actual depth of the boundary is still a topic of debate and study, although it is known to vary according to the environment. The LAB is determined from the differences in the lithosphere and asthenosphere including, but not limited to, differences in grain size, chemical composition, thermal properties, and
Cool the Earth Cool the Earth Cool the Earth Inc. is a non-profit educational organization based in Northern California. The mission of Cool the Earth is to educate kids and their families about climate change and motivate them to take simple measurable actions at home to reduce their carbon emissions. Currently, the organization offers programming to over 100 elementary schools. Cool the Earth was founded in 2007 by Marin County parents, Carleen and Jeff Cullen, in the North San Francisco Bay Area. The couple said that they were influenced by Al Gore's documentary on climate change, "An Inconvenient Truth". Surprised by what they