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.

Biodiversity in the Sixth Mass Extinction

03/19/24 A prominent biologist explains the crucial importance of biodiversity for life on Earth, and how the sixth mass extinction fractures that stability. Michael Reed.

Human Language, Animal Communication

04/26/21 The evolution of the human language apparatus, comparison of human language and animal communication, and explanation of the Neanderthal language controversy. Philip Lieberman

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

Climate Change and Ocean Circulation Systems

09/28/20 Ocean currents transport heat and cold around the globe, affecting weather and climate, and delivering nutrients to marine life. How does the accelerating climate change impact this vital system? Amy Bower

They Didn't Believe It! The Germ Theory of Disease

02/03/20 Despite great medical accomplishments in ancient civilizations, then medical advances from the 17th century on, the connection between germs and disease was unknown.

Understanding Viruses: The Connor Lab

07/2014 The Connor Lab at Boston University is a leader in the effort to understand how viruses infect and how cells learn how to block infection. John Connor

The D-Lab at MIT: Engineering by and for Developing Nations

11/01/11 An award-winning MIT lab engineers practical necessities for impoverished nations. Amy Smith

Carbon Capture and Conversion

07/19/21 A carbon capture innovation that can produce useful, products, including non-polluting transportation fuels. Sami Khan

Today's Featured Contributors

Featured Author

Jon Beckwith, Ph.D.

A great scientist's dual role as geneticist and social activist

Featured Guest

Daniel Nocera

A distinguished chemist and innovator, known especially for his energy innovation, the bionic leaf.