Is this the future of human identity?
Luke James Ritchie/Shutterstock.com
The technologies change, but the challenge remains the same: How can a digital system authenticate an analog human's identity?
Who gets to vote?
With a year before Election Day 2018, election integrity depends on ensuring fairness and access for American voters. Foreign tampering is a real but less serious concern.
The iPhone X’s big new features come with a high price tag.
AP Photo/Marcio Jose Sanchez
Apple's latest iPhone sold out within minutes of its launch, but questions still remain about whether that pace of demand will continue and, if so, whether the company's supply chain will be able to keep up.
With no money to research guns, there’s no evidence to base policy on.
Horrific mass shootings in the US typically renew the national debate about gun policy. A gun researcher explains the lack of funding for study in this area and what that means for informed policy.
Supercomputer simulation of a pair of neutron stars colliding.
NASA/AEI/ZIB/M. Koppitz and L. Rezzolla
A LIGO team member describes how the detection of a gravitational wave from a new source – merging neutron stars – vaults astronomy into a new era of 'multi-messenger' observations.
Grid operators set the prices for energy markets and are structured to take the lowest prices – a disadvantage for coal and nuclear power.
Two moves by the Trump administration signal a dramatic shift in energy policy to favor coal and nuclear, but markets forces and legal challenges mean changes could take years.
When is might right?
Glynnis Jones / Shutterstock.com
Most Americans don't want the United States to be the world's policeman. Do the experts agree?
U.S. Supreme Court Justice Ruth Bader Ginsburg.
AP Photo/Charles Rex Arbogast
A survey asked Americans what they would do if the Supreme Court started making many unpopular decisions. Here's what they said.
Is speaking some evil really so bad?
We gave four scholars from different disciplines a chance to offer their opinions on this important question.
Charlie Chaplin’s character Adenoid Hynkel was a not-so-subtle nod to Adolf Hitler.
Chaplin's 1940 film 'The Great Dictator' mocks Hitler’s absurdity and overweening vanity, while highlighting Germany's psychological captivity to a political fraud.
Conor McGregor speaks with reporters after a media workout in preparation for his fight against Floyd Mayweather Jr.
USA Today Sports/Reuters
McGregor and Floyd Mayweather Jr. will both cash in, but does a boxing novice stand a chance against a legend?
Denali National Park, Alaska.
Snowshoe hares in warmer zones have thinner fur, and some are not turning white in winter. As climate change warms the Northeast, will this species adapt?
Who set the guardrails on global temperature rise?
More and more research shows that we are likely to pass the 2 degree Celsius temperature limit much of the world has agreed on. Where did that limit come from, and what if we miss it?
What message would you send to outer space?
Humanity is the real target for these recordings which continue to inspire us to better understand ourselves and our place in the cosmos.
Franklin’s lifelong quest was spreading scientific knowledge to regular people.
Franklin advanced a scientific – not supernatural – understanding of astronomical events such as eclipses. His satirical character 'Poor Richard' mocked those who bought into astrological predictions.
A solar eclipse observed over Grand Canyon National Park in May 2012.
Grand Canyon National Park
More than 2,000 years ago, the Babylonians understood the cycle of eclipses. They also regarded them as signs that could foretell the death of a king.
Six million people in Pennsylvania and neighboring states get their drinking water from the Susquehanna River. Major pollution sources include agriculture, urban development and industry.
Nicholas A. Tonelli
America's drinking water infrastructure is aging and needs billions of dollars in upgrades. Two extension educators urge consumers to monitor their water and have it tested if they suspect problems.
Consumers often distrust mission-driven groups that earn profits.
Brian A Jackson/Shutterstock.com
People may initially assume the worst when they encounter for-profit companies with social missions. What can these social ventures with good intentions do to gain people’s support?
How can we ensure technology brings prosperity to us all?
Political and community leaders must act now to preserve the American middle class and adapt the US economy for the 21st century.
Years from now, she’ll probably be ready to part with her photo assistant.
Most Americans cling to things with sentimental value that we no longer need. Taking pictures of these possessions may make it easier to give them away.