The 31-year-old Grammy winner was in Ghana this week with Free the Slaves, a nonprofit organization whose mission is to end slavery worldwide.We arrived there just in time for the next boat tour, which was at 10 p.m. Id figured that wed be taking a larger cruise as we had when we went out to the reef in Australia. In this case, however, they stuffed about 15 passengers onto a tiny motor boat, and then took us out into the middle of the bay.The Iraqi checkpoints mostly have been peaceful, but clashes continue to break out between Kurdish and Arab forces.In addition to feeding marine species, plankton suck up carbon dioxide, a vital job in a warming world and one that climate engineers are trying to emulate, Earle noted See pictures of seven emergency climate fixes.