Science Speculations: Time Travel

03/15/18 How realistic is the time-travel concept and how would time machines work? David Toomey

How Solar Systems Form: Puzzles and Possibilities

03/11/14 Astronomer Joan Najita explains the challenge of understanding how planetary systems are created.

Infant Fossil Teeth: Clues to Ancient Human Development

11/13/13 Ancient infant teeth reveal the importance of weaning patterns in human evolution. Tanya Smith

The Evolution of Photosynthesis

10/19/10 How photosynthesis --and life-- emerged in Earth's ancient chemical environment. Tanja Bosak and Alexander Petroff

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

Corporate Science and Genetically Modified Foods

04/15/15 A leading expert and author on the issue of genetically modified foods explains the corporate resistance to labeling GM foods. Sheldon Krimsky

Frozen in Time: Preserving for Later Revival

01/09/24 GBH Forum Network Webinar. Innovations in bio-engineering are revolutionizing medicine. Preservation of tissues, organs, sperm/eggs can be preserved in several different ways for future use. It's a real challenge, but the methods are improving quickly. Mehmet Toner.

Good Diet, Good Health

10/08/21 The typical American diet, heavy on processed food and excess sugar, is associated with high levels of diabetes 2, heart disease and other conditions. What is a genuinely good diet and how does it promote health? Walter Willett

Cooler Smarter

06/28/12 A co-author of the new book from the Union of Concerned Scientists describes how individuals can substantially reduce their carbon footprints while creating a healthy lifestyle...Jeff Deyette

The Bionic Leaf: Clean Energy for All

08/02/22 A unique innovation based on photosynthesis, the bionic leaf can potentially produce energy and fuel inexpensively --and in a localized manner. Daniel Nocera

Today's Featured Contributors

Featured Author

Anne Biklé

Biologist and Environmental Planner; co-author with David R. Montgomery of two excellent books on soil health, regeneration --and the relationship to healthy food.

Featured Guest

Davidson Hamer, M.D.

A specialist in infectious diseases, with extensive medical and research experience in more than 50 nations --and a dedicated advocate for children's health worldwide.