About the Author:
Henry N. Pollack, PhD, has been a Professor of Geophysics at the University of Michigan for more than 40 years. In the scientific community, he has earned a reputation as one of the worlds leading experts on the temperature of the Earth, both today and in the geological past. An award-winning teacher with a gift for explaining science to non-scientists, Professor Pollack has taken a special interest in helping leaders in government, business and the general public understand the scientific developments associated with global climate change. Over the course of his career, he has educated generations of students, published widely in scientific journals, led his department as chairman, served as an advisor to the US National Science Foundation, testified before Congress, and launched the first international efforts to coordinate research into geothermal evidence of global climate change.