Graduate Programs in the Physical Sciences, Mathematics, Agricultural Sciences (Peterson's Graduate Programs in the Physical Sciences, Mathematics, Agricultural ... the Environment & Natural Resources)
Chapters Eleven and Twelve: Geographical distribution. In which Darwin demonstrates the importance of geographical barriers and climate change to explain the distribution of life as we see it today. Narrated by Richard Webb.
Chapters Nine and Ten: On the geological succession of organic beings. In which Darwin considers why our palaeontological collections are full of gaps, and describes how his theory can account for the pattern of succession from fossils to living forms. Narrated by Michael Marshall.
The stars of The Big Bang Theory are two fictional Caltech physicists, but the physics problems they study are real. Bill Prady, the program's co-creator and executive producer, talks about including real-world science in the script, from dark matter to magnetic monopoles.
In Smallpox: The Death of a Disease , Dr. D.A. Henderson recounts the history of the deadly virus, from the development of the first vaccine in the late 18th century to his involvement in the successful global eradication campaign in the 1960s and 70s.
New guidelines from the U.S. Preventive Services Task Force recommend women start getting routine mammograms at age 50, not 40. Ira Flatow and guests take a closer look at the guidelines and what they mean for women's health.
The holiday season is here and for many that can mean a surge in stress. But what is stress exactly? Science Friday hit the streets of New York City to gauge stress levels and consulted with experts on the effects of stress and strategies for how to cope.
Researchers are hoping to improve solar energy installations by coupling a solar panel to an efficient hydrolysis unit that splits water into oxygen and hydrogen. Daniel Nocera of MIT says the approach could lead to personal solar power units that could get many houses off the grid.
With NASA reporting a "significant amount" of water on the lunar surface, is it time to re-examine our priorities regarding living and working in space? Mark Sykes, director of the Planetary Science Institute, talks about why and how people should venture beyond Earth.
Dengue fever, malaria and other tropical diseases took center stage at the American Society of Tropical Medicine and Hygiene conference. Nathan Seppa of Science News offers details, including a strange story of palm trees, fruit bats and human infection.
Chapter Six: Difficulties on theory. In which Darwin considers organs of extreme perfection and other apparent stumbling blocks for his theory. Narrated by Jessica Griggs.
Chapters Four and Five: Natural selection and laws of variation. In which Darwin explains how inherited differences in the ability to survive and reproduce have shaped nature, and explores the forces influencing the variation upon which natural selection works. Narrated by Julian Richards.
Chapter Two: Variation under nature. In which Darwin considers individual differences and highlights the wide degree of variability within species upon which natural selection works. Narrated by Rowan Hooper.