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

Earth Life and Weird Life

12/17/15 The compelling search for entirely new forms of life elsewhere in our solar system and the universe. David Toomey

Scale-Free Complex Networks: Albert-László Barabási, Ph.D.

08/05/13 A visit to the Barabási Lab at Northeastern University to learn how scale-free complex networks affect scientific perspectives

The Alvin Deep-Sea Submersible: An Engineer's Story

08/31/15 Dudley Foster, the Woods Hole engineer closely associated with the Alvin's history, describes explorations of this famous deep-sea submersible. Dudley Foster

Climate Change: How to Think Globally & Act Locally

02/12/18 Today's global citizens can and must engage in the struggle to address climate change. Dan Cziczo

Creating and Testing Vaccines

02/15/21 The amazing mechanisms by which viruses infect cells and the challenge of developing effective vaccines. Forian Douam

An Update on Those "Forever" Chemicals

10-17-23 WGBH Forum Network webinar PFAS, a group of chemicals added to many everyday products, became a concern years ago among medical researchers, but governmental agencies were slow to impose regulations. Philippe Grandjean

Innovations for the People: The GEAR Lab at MIT

10/19/20 The Global Engineering and Research (GEAR) Lab produces cost-saving, practical innovations that make a real difference for developing nations: home-use desalination, drip irrigation -and many other solutions. Amos Winter

From Sea-Sponge to Skyscraper: Bioinspired Engineering

11/16/20 The structure of a humble marine organism inspires mechanical engineers and architects in the design of skyscrapers, massive bridges and other challenging projects. Matheus Fernandes

Today's Featured Contributors

Featured Author

Walter Willett, M.D.,

First-rate advice from the most cited nutritionist internationally: a guide to improving health through a good diet

Featured Guest

Max Tegmark, PhD

A prominent astrophysicist's perspective on multiple universes