NASA study reveals gene changes between twin astronauts

Can space travel affect your DNA? NASA releases test results of twins and astronauts Mark and Scott Kelly

Newly elected Arizona Sen. Mark Kelly and his twin brother took part in a groundbreaking NASA experiment for 4 years. Here's what we learned from it.

What You Need To Know About NASA's Twin Study

Why Astronauts Return from Space with Deformed Eyeballs

In Orbit Around Mars? This Is What You Could See

NASA science experiment filmed in space

NASA Astronauts Explain Nonverbal Communication In Space

Special counsel subpoenas the Trump Organization for Russia documents

'Instant bridge' that collapsed in Miami supposed to last 100 years

Church shooter's sister arrested after social media post

Family of slain DNC staffer speaks out

Kansas-bound dog mistakenly flown to Japan

White House blames Moscow for poisoning former spy

Students across the country rally in National School Walkouts to end gun violence

How the TV show 'Deception' depicts real magic tricks on screen

Celebrating the work, mind and humor of Stephen Hawking

Students from across the US participate in walkout

The UK expels 23 Russian diplomats in response to ex-spy's poisoning

Stephen Hawking dies at age 76

Parkland survivor on significance of school walkouts

Richard Simmons ordered to pay tabloids $130K

Pennsylvania special election so far too close to project

Trump fires secretary of state on Twitter after months of clashes

Race for House seat neck and neck in GOP-held Pa. district

Who is Rick Saccone?