Using Gravitational Lensing to Detect Dark Matter

01/14/25 Dark matter accounts for some 27 percent of the universe but is invisible. One promising technique to reveal it is the analysis of gravitational lensing that very occasionally aligns galaxy clusters. Jacqueline McCleary

They Didn't Believe It! Dark Matter

12/02/19 Most of the matter in the universe is invisible --and scientists still do not know what it is. This is a brief story of how the idea of dark matter was very slowly accepted.

Kingdom of Play

05/06/24 WGBH Forum Network webinar. All sorts of animals engage in imaginative types of play. Is this behavior just creature-entertainment, or is it important for development and bonding? David Toomey

The Co-Evolution of Organisms and Their Environments

03/08/16 Reconstructing the relationship between biological evolution and geology, climate, environment. Andrew Knoll

Why We Need an International Plan on Climate Change

07/28/17 The long struggle to commit the international community to prepare for the worldwide climate crisis. Henrik Selin

Take Action! How We Can Save the Environment

06/21/18 Harvard's Law School Environmental Clinic shows us how we can use the law to save our environment. Wendy B. Jacobs

Breakthroughs in Nanotechnology

09/27/16 Advances in nanotechnology are revolutionizing medicine. A leader in the field describes recent developments and his commitment to making them available to a wide public. Sameer Sonkusale

What Should We Talk about When We Talk about Health?

01/30/18 A comprehensive approach to public health: the body, the environment, the culture, the conditions. Sandro Galea

There Is More Than Enough Renewable Energy

03/06/18 Irrefutable evidence for why we should --and can-- transition to renewable energy without delay. Mara Prentiss

Harvesting Electricity Out of Thin Air

10/24/23 Imagine a future world in which clean electricity is available anywhere you go. The generic Air-gen effect innovation means that this future world can become a reality. Jun Yao

Today's Featured Contributors

Featured Author

Mick Follows, Ph.D.

An interdisciplinary perspective on the biogeochemical relationships of ocean cycles

Featured Guest

Jack Ridge, Ph.D.

A leader in the study of North American glacial varves