Looking for Signatures of Life on Mars

03/17/15 Was there ever life on Mars? How do scientists search for and analyze possible clues? Roger Summons

The Formation of Stars and Planets

09/15/15 How stars and their planetary systems form, and what the New Horizons mission to Pluto will reveal about the "fossil record" of our own solar system. Scott J. Kenyon

Our Robots, Ourselves

02/10/16 The author of "Our Robots, Ourselves" discusses the limits of robot autonomy. David Mindell

Biodiversity in the Sixth Mass Extinction

03/19/24 A prominent biologist explains the crucial importance of biodiversity for life on Earth, and how the sixth mass extinction fractures that stability. Michael Reed.

Deep-Sea Volcanoes

04/26/16 Scientists are now able to study in detail the dynamic volcanic activity of the deep ocean ridges. Here are some amazing discoveries. Daniel Fornari

The Real Key to Feeding the World

09/20/21 The distinguished scientist and author of "Growing a Revolution: Bringing Our Soil Back to Life" explains the destructiveness of industrialized agriculture and shows how to feed the world while restoring the soil and environment. David Montgomery

Beyond the Gene: Epigenetics Revealed

06/12/12 ew understanding of the complex relationship between genes and the epigenome. Mary Gehring

Environmental Toxins and the Brain

10/2014 Many common toxins in the environment significantly harm the fetal brain. Philippe Grandjean

The D-Lab at MIT: Engineering by and for Developing Nations

11/01/11 An award-winning MIT lab engineers practical necessities for impoverished nations. Amy Smith

Carbon Capture and Conversion

07/19/21 A carbon capture innovation that can produce useful, products, including non-polluting transportation fuels. Sami Khan

Today's Featured Contributors

Featured Author

Mara Prentiss, Ph.D.

A prominent physicist makes a compelling case for shifting to alternative energy --now!

Featured Guest

Mick Follows, PhD

An expert on the crucial role of ocean plankton in maintaining the Earth's CO2 balance