Barack Obama, outgoing president of the U.S., has stepped directly into the climate debate. He believes that the U.S. is on the way to a “clean energy” world and he delivers four reasons why he thinks the shift is now irreversible.
Barack Obama, outgoing president of the U.S., has stepped directly into the climate debate. He believes that the U.S. is on the way to a “clean energy” world and he delivers four reasons why he thinks the shift is now irreversible.
