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At only 78 pages long, Carlo Rovelli's "Seven Brief Lessons on Physics" is certainly that. He speaks with NPR's Linda Wertheimer about modern physics.

EgyptAir says there were 66 people aboard Flight MS 804 when it disappeared from radar in the early hours of the morning. No debris from the plane has been found so far.

The investigation into the crash of EgyptAir flight 804 continues. Searchers have found wreckage and officials are seeking a cause.

Need a vision test? Now you can do it online with a computer and a smartphone. The site has attracted a lot of attention in the tech world, but eye care professionals have concerns.

Mosquito season is just getting underway in the U.S., and some areas have the mosquitoes that transmit the Zika virus. Pregnant women in places like Florida and Texas are at greatest risk.

Mary Fallin's office released a statement, touting her anti-abortion credentials but saying the bill was "vague and would not withstand a criminal constitutional legal challenge."

Three crocodiles captured near Miami in 2009, 2011 and 2014 are indeed Nile crocodiles. They are bigger and far more aggressive than the American crocodiles that are native to the Florida Everglades.

As his time in office winds down, President Obama has sought to jettison vestiges of the Cold War and reach out to old rivals, from Vietnam to Cuba and beyond.

Following a gruesome killing, allegedly by a former Marine, controversy over the presence of American troops on Okinawa is adding another layer to Obama's historic trip this week.

It's not unusual for males to try to impress females with big body parts. Consider antlers on deer, or elaborate tails on peacocks. Some male fruit flies take a different approach: giant sperm.