Dark Matter in the Universe

09/28/10 Some mysterious, invisible stuff is holding galaxies together. Peter Fisher

Cosmic Evolution

12/09/14 From the beginning of the universe to complex life: an explanation of the development of the cosmos. Eric Chaisson

Leaving It Up to Chance: How Cells Make Decisions

03/18/14 Cells make decisions that turn out to be random. Jané Kondev explains the implications of that surprising discovery.

Microbial Ecosystems: The Foundation of Life on Earth

06/01/23 Although all life depends on microbial ecosystems, there are many unknowns about the mechanisms by which these ecosystems develop and evolve in diverse environments. Otto Cordero

Coastal Ecosystems and Climate Change

12/17/14 An international expert explains how coastal ecosystems function and how they are adjusting to current stresses. Brian Helmuth

What Marine Sediments Reveal about Climate Change

06/03/14 A major authority on ocean sediments discusses what these deposits tell us about past and present climate. Richard Murray

Nanotechnology Advances for Healthcare and Environment

05/08/18 Truly innovative research: nano-tech devices for medicine and environment. Sameer Sonkusale

The Impact of Air Pollution on Health

12/12/19 Jonathan Levy of Boston University School of Public Health describes how urban air pollutants such as vehicle exhaust affect our health.

Energy Revolution!

05/21/15 Conversion to wind and solar power is entirely possible now in the U.S. Mara Prentiss

Distinguishing Scientific Facts from Disinformation and Distortion

04/05/22 How can we distinguish scientific facts from disinformation? This Union of Concerned Scientists writer battles distortion on a regular basis. Elliott Negin

Today's Featured Contributors

Featured Author

Paul Steinhardt, Ph.D.

An excellent resource on cosmology for the general reader, co-authored by one of the greatest theoretical physicists of our time

Featured Guest

Nir Eisikovits, Ph.D.

A prominent philosopher who addresses issues in Artificial Intelligence and in military ethics.