Looking for Signatures of Life on Mars

03/17/15 Was there ever life on Mars? How do scientists search for and analyze possible clues? Roger Summons

The Formation of Stars and Planets

09/15/15 How stars and their planetary systems form, and what the New Horizons mission to Pluto will reveal about the "fossil record" of our own solar system. Scott J. Kenyon

Advanced Research on the Origin of Life

05/10/10 Two young scientists at the famous Jack Szostak Lab explain research issues, Matthew Powner and Utay Budin

Why AI Can Seem Sentient

05/10/23 Although technologies such as ChatBots are not conscious, their sophisticated communications can seem human enough to fool people. That raises concerns. Nir Eisikovits

The Menace of Agrochemicals

10/18/21 A prominent researcher-author-public advocate discusses the environmental and health issues of agrochemicals, especially glyphosate (Roundup). Sheldon Krimsky

The Global Green New Deal

09-03-24 The book Climate Crisis and the Global Green New Deal by Noam Chomsky and Robert Pollin is one of the most important books on our urgent global issue. Robert Pollin discusses the economic factors underlying the climate crisis and the strategy needed to shift to a Global Green New Deal which will restore the planet and civilization. Robert Pollin

The Struggle to Ban Pesticides That Disrupt Brain Development

07/05/22 Scientists struggled for decades to get an EPA ban on Chlorpyrifos, a widely used pesticide known to impair brain development. As autism, ADHD and other developmental conditions increased, vested interests blocked efforts to regulate Chlorpyrifos and other agricultural toxins. Philip Landrigan

The Opioid Crisis: Origin and Implications

05/30/23 The Centers for Disease Control and Prevention (CDC) has aptly described the opioid crisis as the “worst drug overdose epidemic in [US] history.” How did that happen? Andrew Kolodny, M.D.

Innovations in Clean Water Technology

12/20/11 Desalination offers a solution to the water shortage problem... John Lienhard V

Designing Sustainable Urban Development

11/25/19 How the world-class Sustainable Design Lab at MIT combines architecture, engineering, physics --and creative genius-- to design the optimal urban environment. Christoph Reinhart

Today's Featured Contributors

Featured Author

Andy Knoll, Ph.D.

An acclaimed scientist and award-winning author, whose books on the relationship between geology, environment and evolution are both brilliant and accessible.

Featured Guest

John Ebel, Ph.D.

A prominent seismologist explains how and where earthquakes and tsunamis are generated