Explaining and Measuring the Expanding Universe

08/28/20 The universe is expanding at an incredible rate, and dark energy is thought to be the cause. Astronomers observe and measure this mystery with very sophisticated equipment. Paul Martini

Science Speculations: Time Travel

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

Ancient Environmental Shifts and Evolution

05/03/21 A warming climate led to the emergence of grasslands, which led to major evolutionary changes. Aly Baumgartner

A Spotlight on the Impact of the Wildlife Trade

07/14/20 The persistence of the international wildlife trade is destructive for wildlife, ecosystems, environment, and human health. Maria Ivanova and Candace Famiglietti

Journey to the Center of the Earth

11/05/13 What modern seismologists are learning about the Earth's interior. Miaki Ishii

The Role of the Ocean in the Global Carbon Cycle

01/22/13 The complex relationship between marine life and the chemistry and circulation of oceans. Mick Follows

Stem Cell Research and Communicating Science

10/03/23 A distinguished pioneer in stem cell research for oral conditions, wound healing and diabetes explains the issues and the advances in this field, and the importance of science communication for the public. Jonathan Garlick

Revealing the Brain through States of Unconsciousness

11/15/11 Important insights into the brain from research on anesthesia, coma and sleep. Emery N. Brown

The Push for Renewable Energy

06/26/16 An author-activist urges public engagement to ensure the transition to renewable energy. Philip Warburg

Why Are We Spending Billions on Carbon Capture and Storage?

09/20/22 Despite the hype, carbon capture and storage (CCS) is not a solution to the CO2 problem. Charles Harvey

Today's Featured Contributors

Featured Author

Mario Livio, Ph.D.

A well known astrophysicist who is also gifted at making science and mathematics accessible to the general public

Featured Guest

Aaron Kesselheim, M.D., J.D., M.P.H.

A research physician who brings his combined medical and legal expertise to the evaluation of regulatory agencies