Princeton University

A Youtube video of GEO senior Alan Southworth singing "How Sweet It Is." Southworth performed with The Princeton Nassoons at the 2013 Princeton-run Yale Jam in November. He arranged this piece as well. For more info visit: http://www.nassoons.com/

Our conversation threaded through so many topics, as I peppered Dr. Oppenheimer with questions. So rather than present you with a simple Q&A with him, I've pulled out and highlighted key messages, lessons, observations and themes that came up over the course of an hour -- Dr. Oppenheimer amplifies each one.

Researchers from Princeton University and the Swiss Federal Institute of Techonology in Zurich have confirmed that during the last ice age iron fertilization caused plankton to thrive in a region of the Southern Ocean. The research confirms Martin's hypothesis, said Daniel Sigman, Princeton's Dusenbury Professor of Geological and Geophysical Sciences, and a co-leader of the study.

The Sun was once thought to provide energy for all life on Earth - meaning that life could not survive without it. In the 20th century, as astrobiologists began to explore the Earth's most remote and harsh environments, scientists began to question that assumption. now know that numerous microorganisms are able to obtain the energy they need for life through chemical reactions that do not involve sunlight.

Improved methods for studying minerals at extreme pressures and temperatures promise a new era for exploring our planet's centre, says Prof. Thomas Duffy.