The Tumultuous Milky Way and Its Satellite Galaxies

08/23/11 How do spiral galaxies like our Milky Way form? Elena D'Onghia

How to Talk to a Science Denier

03/08/22 The right author and the right book with the right strategy for dealing with those who reject scientific facts. Lee McIntyre

The Mystery of Animal Migration

09/17/24 How migratory creatures navigate so accurately to their seasonal destinations, sometimes thousands of miles away, is still often a mystery. What do scientists know, and what are they still trying to discover? Charles Walcott

Sustaining Life: Biodiversity and Human Health

06/07/11 Aaron Bernstein, M.D, MPH and author explains how the unprecedented loss of biodiversity impacts human health.

Saving the Himalayas

12/22/15 Can the great Himalaya ecosystem adapt to the dual assault of rapid development and climate change? Maharaj Pandit

Human Earth

12/09/21 A distinguished geologist compares the human impact on our planet with the impacts of natural catastrophes over billions of years. Based on his book, A Brief History of Earth, this discussion is a sequel to an earlier conversation. Andrew Knoll

Harnessing the Bioelectric Potential of Cells for Regeneration

02/21/12 Can bioelectric signals in cells be exploited for regeneration of limbs and tissue? This is an important area of medical research. Michael Levin

Scientists Raise the Alarm: Endocrine Disruptors Affect Brain Development

08/03/20 An important update on the impact of common toxins in the environment that permanently affect the brain -starting in the womb. The evidence of damage is far ahead of the regulation of these chemicals. Thomas Zoeller

Why Are We Spending Billions on Carbon Capture and Storage?

09/20/22 Despite the hype, carbon capture and storage (CCS) is not a solution to the CO2 problem. Charles Harvey

Renewable Energy Progress --Despite Resistance from the Fossil Fuel Industry

11/10/15 What we can do to speed up the transition to renewable energy, despite Big Oil's well funded resistance. Jeff Deyette

Today's Featured Contributors

Featured Author

Philip Lieberman, Ph.D.

A distinguished scientist who has contributed significantly to our understanding of the evolution of cognition, communication and language

Featured Guest

Sharon Levy

A respected nature writer discusses ancient and modern extinctions