Science Speculations: Time Travel

03/15/18 How realistic is the time-travel concept and how would time machines work? David Toomey

How Solar Systems Form: Puzzles and Possibilities

03/11/14 Astronomer Joan Najita explains the challenge of understanding how planetary systems are created.

Self-Defense Mechanisms of the Cell

12/14/10 The cell's self-defense repair kit against hereditary, environmental, and other threats. Sushil Alimchandani

Mass Extinctions

04/09/19 What caused Earth's five mass extinctions --and most important--are we headed for a sixth? Andrew Knoll

Deep-Sea Volcanoes

04/26/16 Scientists are now able to study in detail the dynamic volcanic activity of the deep ocean ridges. Here are some amazing discoveries. Daniel Fornari

The Real Key to Feeding the World

09/20/21 The distinguished scientist and author of "Growing a Revolution: Bringing Our Soil Back to Life" explains the destructiveness of industrialized agriculture and shows how to feed the world while restoring the soil and environment. David Montgomery

Scientists Raise the Alarm: Endocrine Disruptors Affect Brain Development

08/03/20 An important update on the impact of common toxins in the environment that permanently affect the brain -starting in the womb. The evidence of damage is far ahead of the regulation of these chemicals. Thomas Zoeller

Cracking the Neural Code for Speech

01/27/12 vThe Neural Prosthesis Lab at Boston University demonstrates the Brain-Computer-Interface: a communication device for the severely impaired. Frank Guenther

Science Outreach Programs for Youth

10/16/12 How university educational outreach programs encourage high school students' interest in science. Irene Porro

"Green" Batteries for Renewable Energy: How About Rhubarb?

05/23/17 The great potential of ordinary plants in the development of "green" batteries. Alán Aspuru-Guzik

Today's Featured Contributors

Featured Author

Sheldon Krimsky, Ph.D.

Professor Krimsky's excellent books represent a broad range of science-related issues

Featured Guest

Sandro Galea, MD, DrPH

A distinguished physician-public health scientist who emphasizes the context of health: the economic, social, environmental factors that affect an individual's well-being in addition to the biological factors.