TUCSON, Arizona, Sept. 27 (TNSres) -- The University of Arizona issued the following news release: The last ice age peaked around 20,000 years ago and was marked by extensive glaciation and dramatic climate shifts that reshaped Earth's oceans, landscapes and ecosystems. A new study led by the University of Arizona suggests that Earth's last ice age may provide crucial insights into future El Nino weather events. El Nino is one of the most influential climate patterns affecting global weather.   more