Reconstructing the Inaccessible Cosmic Dawn

12/06/22 The only way to understand the emergence of the earliest structures in the universe is through complex computer simulations. Here's how they are created and tested. Mark Vogelsberger

Massive Galaxies: Where and How They Form

04/14/2014 The investigation of how super-galaxies form is expected to provide insight into other mysteries such as dark matter and dark energy. Arjun Dey

Microbial Ecosystems: The Foundation of Life on Earth

06/01/23 Although all life depends on microbial ecosystems, there are many unknowns about the mechanisms by which these ecosystems develop and evolve in diverse environments. Otto Cordero

Conservation Lessons from Ice-Age Extinctions

04/26/11 Was there a human factor in the Ice Age extinctions of large mammals? ............ Sharon Levy

Analyzing Clouds and Climate Change

09/26/23 Clouds protect the planet and play an essential role in climate dynamics. How will the rapidly heating planet affect that relationship? Daniel Cziczo

2000 Years of Oceans and Climate

11-14-23 The warming oceans will seriously affect global climate. Developing accurate models of how and when those impacts will occur requires analysis of both contemporary and historical data. Hali Kilbourne

The Youth Pill

09/10/10 What are the possibilities of extending human life and good health? David Stipp

What Ails American Healthcare?

08/30/22 The U.S. healthcare system ranks last among 11 high-income countries. We spend more than other nations on medical care, but the service is seriously inadequate. What can be done? Melissa Gariddo

Replacing Plastic: The Merits of Shrilk

02/04/14 Materials scientist Javier Fernandez discusses the "plastisphere" crisis and how it motivated the development of biodegradable "shrilk."

A Potential Solution to the Methane Problem

03/29/22 An innovation attracting great interest: an abundant, inexpensive clay might be used to remove the greenhouse gas methane from the atmosphere. Desiree Plata

Today's Featured Contributors

Featured Author

Henrik Selin, Ph.D.

An international expert on climate change and environmental policy who emphasizes the need for global action on climate change

Featured Guest

Nir Eisikovits, Ph.D.

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