World leaders at the U.N. climate conference are trying for the 21st time to limit greenhouse gas emissions. Here's how they can finally reach meaningful agreements
From the psychology of violent extremism to cracking encrypted communications, counterterrorism efforts rely on the latest scientific research
10 big advances that will improve life, transform computing and maybe even save the planet
Six $3-million prizes awarded to advances in neutrino particle physics, topology, optogenetics and more
Gun-control laws and ownership restrictions are changing but clearly remain insufficient to bring our rates of gun deaths down to levels found in nearly all other developed countries
From world-changing inventions to discoveries that shaped our understanding the natural world, a look back at the evolution of the oldest continuously published magazine in the U.S.
Rising population and climate change threatens the world’s supply of freshwater. Here are some possible solutions
In the 10 years since this deadly storm, which also came in as one of the costliest natural disasters in U.S. history, the nation’s leaders and engineers still struggle to upgrade our preparedness
How relativity changed the rules of our reality
The emergence of mobile “assistive” technologies, influenced heavily by the passage of the Americans with Disabilities Act (ADA) 25 years ago, marks a major step forward for people with disabilities, unlocking unprecedented new possibilities for communication, navigation and independence
Bacteria are finally overrunning our last defenses. Can we stop them?
NASA’s New Horizons’ close approach to the last of the original set of nine planets in our solar system is yielding a bounty of surprising planetary science
Science is transforming how we teach our children and nurture our scientific talent
Nearly one in 100 U.S. adults is in prison or jail, often as a result of questionable or biased convictions and subject to living (and dying) under conditions that research reveals as extremely inhumane
Our In-Depth Report commemorates the Hubble Space Telescope's unprecedented 25 years in orbit
Derailments, fires and crashes continue as the U.S.’s rail infrastructure decays and technology solutions lie fallow
What causes tremors? What makes them stop? Can they be predicted? Are our buildings as safe as they can be?
Five years after BP's disaster in the Gulf of Mexico, effects linger but recovery has begun
NASA's Dawn spacecraft has entered orbit around the dwarf planet Ceres, one of the most geologically interesting objects in the solar system
7 stories on ways that nanomedicine is revolutionizing healthcare
As March Madness wraps up, here's a guide what science says about basketball from bracket choices to injury prevention
The first five digits of pi, 3.1415, is being celebrated on March 14, 2015, with a day for math fun, circular logic and, of course, pie eating
The debate over so-called "Net neutrality" has raged for more than a decade, pitting tech entrepreneurs against the Internet Service Providers (ISPs) who deliver digital content to our computers and mobile devices. Along the way, activists, lobbyists, politicians and even Pres. Barack Obama have weighed in on either side. The U.S. Federal Communications Commission's (FCC) vote to ban paid prioritization of Internet traffic as well as the blocking and throttling of online content and services marks, if not the final word on the matter, at least a milestone for this issue. Scientific American takes a look at the FCC's decision and the major events leading up to this historic vote.
Revelations about microbes in the gut are shaking the foundations of medicine and nutrition