Scientists Mull the Astrobiological Implications of an Airless Alien Planet
A rocky world devoid of atmosphere arouses debate over the habitability of the Milky Way’s most common star systems
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3-D Printing and the Race for Space
It lets aerospace engineers develop high-quality parts much faster than they could with traditional fabrication methods
Panama Risks Becoming a Broken Link in an Intercontinental Wildlife Route
A survey of nine large mammals found fragmented habitats throughout the country, suggesting the Mesoamerican Biological Corridor is failing...
A Growing Number of Americans Are Alarmed about Global Warming
But many more should be
Our Ethics Must Catch Up with Our Increasingly Powerful Technology
Humanity is like a teenager trying to control a 500-horsepower Ferrari
Top U.S. Medical Centers Roll Out DNA Sequencing Clinics for Healthy Clients
Patients can pay hundreds to thousands of dollars to screen for genetic health risks
Trials Test if C-section Babies Benefit from Mom's Microbes
Swabbing infants with mothers’ vaginal bacteria could affect the children’s health, but critics warn of sparse data and high risk
And Now the Really Big Coal Plants Begin to Close
Old, small plants were the early retirees, but several of the biggest U.S. coal burners—and CO2 emitters—will be shuttered by year’s end
An Innovative Robotic Exosuit Boosts both Walking and Running
The soft wearable could prove useful for military applications, emergencies and medical rehabilitation
Carbon Pricing Is Not a Fix for Climate Change
The problem: developing countries can't afford to go along
