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

Reconstructing the Ancient Viking Colonies

05/31/22 How do archaeologists reconstruct the far-flung colonies of the ancient seafaring Norsemen/Vikings? Douglas Bolender

The Human Genome Project

09/20/11 The challenge for genomic studies today is how to manage the vast collection of data. John Quackenbush

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

The Impact of Air Pollution on Health

12/12/19 Jonathan Levy of Boston University School of Public Health describes how urban air pollutants such as vehicle exhaust affect our health.

Traffic Pollution and Child Cognition

09/27/10 The effects of vehicle pollutants on the developing brain. Shakira Franco Suglia

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

Max Tegmark, Ph.D.

A leading theoretical physicist introduces the public to the mathematical universe

Featured Guest

Nir Eisikovits, Ph.D.

A prominent philosopher who addresses issues in Artificial Intelligence and in military ethics.