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

Nectar, Pollen and the Health of Bees

07/10/19 Nectar and pollen are sources of food for bees, but some of these sources may also help to reduce certain pathogens. Lynn Adler

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

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

Understanding Coastal Ecosystems

06/18/15 A visit to the Helmuth Lab at NEU's Marine Science Center to learn how scientists investigate effects of changing climate on coastal ecosystems. Brian Helmuth

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

Harnassing Geothermal Energy

10/11/22 Geothermal energy is an ideal source of renewable energy, but it can be hard to access. Here's a plan. Paul Woskov

The Urban Future: On Earth...and Elsewhere

12/05/23 GBH Forum Network webinar (noon). By 2050, some 75 percent of the world population will live in cities. Future urban design will emphasize not only innovative architecture and engineering, but optimal environmental and social aspects of city dwelling also. The urban future might also include settlements beyond Earth. Justin Hollander

Today's Featured Contributors

Featured Author

Mario Livio, Ph.D.

A well known astrophysicist who is also gifted at making science and mathematics accessible to the general public

Featured Guest

Sharon Levy

A respected nature writer discusses ancient and modern extinctions