Divergent plate boundaries are regions where two adjacent plates move apart. (Mid-Atlantic Ridge and the East African Rift Zone.)
Examples of volcanoes that are located along divergent plate boundaries include Krafla Volcano in Iceland, as well as Erta Ale and Oldoinyo Lengai in Africa. Krafla Volcano is situated in the northern section of Iceland.Erta Ale and Oldoinyo Lengai are located within the East African Rift Zone.
The quote states that we should be using solar energy before our limited amount of naturally occurring oil and coal runs out. Meaning; we should be proactively working towards solar power rather than to wait for our resource to run out to start.