Are We Alone in the Universe?

07/25/23 For centuries, we Earthlings have considered ourselves unique in the universe. Scientists today, however, tend to doubt our exceptionalism. But just how common might intelligent life be? Mario Livio

Update from the Large Hadron Collider: The Higgs?

09/11/12 Confirming the Higgs boson is one of the great triumphs in the history of science. Steve Nahn

Mass Extinctions

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

Antarctic Fishes: Models for Climate Change and Human Disease

07/09/13 the unique "antifreeze" blood and skeletal mutations of the Antarctic Icefishes provide insights into both climate change adaptations and human disease. H. William Detrich, III

Addressing the Threat to Earth System Boundaries

09/12/23 The breaching of most of the Earth system boundaries (ESBs) is destroying the planet and the crisis must be addressed immediately. Solutions must include justice for those who suffer displacement, health and economic impacts of the crisis. Diana Liverman

Space Debris Alert!: The Potential Impact on the Ozone Layer and Earth’s Climate

05/27/25 Thousands of satellites orbit Earth. At the end of their missions, they drop into and burn up in the stratosphere, depositing ash that contains oxides and pollutants that are affecting both the ozone layer and the planet's climate. Atmospheric scientists are working to analyze the aerosols and their worrisome impact. Daniel Cziczo

The Advent of Personalized Genomic Medicine

05/24/12 Genomic medicine will revolutionize health care, but it also introduces a challenge for data management. John Quackenbush

The World Health Organization: Lifeline for the World's Children

09/08/20 A distinguished physician-researcher explains the many threats to children's health all over the world, and how millions of young lives are saved by the W.H.O. Davidson Hamer, M.D.

Power Plants and the Freshwater Crisis

06/25/13 The cooling systems of power plants use an enormous percentage of our diminishing freshwater supply. What's the solution? John Rogers

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."

Today's Featured Contributors

Featured Author

Philip Lieberman, Ph.D.

A distinguished scientist who has contributed significantly to our understanding of the evolution of cognition, communication and language

Featured Guest

Pamela Templer, Ph.D.

A prominent biogeoscientist who probes the relationship between climate change, forests and their creatures, and the soil