Physics Beyond the Standard Model at the Large Hadron Collider

The particle collisions at the Large Hadron Collider represent a search for a new physics in the form of new particles or forces that account for unknowns about the cosmos. Markus Klute

Looking for Signatures of Life on Mars

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

The Evolution of Photosynthesis

How photosynthesis --and life-- emerged in Earth's ancient chemical environment. Tanja Bosak and Alexander Petroff

Using Genetics to Trace Human History

An explanation of how modern genetics analysis confirms ancient human migrations, such as the Indo-Europeans. Nick Patterson

What Marine Sediments Reveal about Climate Change

A major authority on ocean sediments discusses what these deposits tell us about past and present climate. Richard Murray

They Didn't Believe It! Plate Tectonics, Foundation of Earth Systems

It took almost a century to determine if and how continents moved (continental drift). In the 1960s irrefutable evidence showed that tectonic plates caused regular shifts of the planet’s magnetic polarity, volcanoes and earthquakes -and the drift of continents.

Scientists Raise the Alarm: Endocrine Disruptors Affect Brain Development

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

How Environmental Pollutants Impair Brain Development

A world authority on how environmental toxins affect brain development brings the evidence to the general public. Philippe Grandjean

The War on Science: What We Need to Do

The anti-science mentality and policies threaten public health, environment, and safety --and also our progress in many scientific fields. Andrew Rosenberg

The D-Lab at MIT: The People's Engineering Team

The award-winning D-Lab's unique approach to improving lives in the poorest nations. Amy Smith

Today's Featured Contributors

Featured Author

David R. Montgomery, Ph.D.

A major geologist who connects the relationship between rocks and life

Featured Guest

Meet James P. O'Dwyer, Ph.D.

Leading research on one of the most important areas of biology: "Ecological systems are the archetypal complex systems."