RedOrbit: Earth`s tropical climate history has been revealed in unprecedented detail year by year, for almost 1,800 years by two annually dated ice cores drawn from the tropical Peruvian Andes.
In 2003, a research team led by Ohio State University retrieved core samples from a Peruvian ice cap. They noticed some startling similarities to ice cores they had gathered from Tibet and the Himalayas. Even though the cores were taken from opposite sides of the planet, patterns in the chemical composition of...