In her criticism of CNN, White House press secretary Karoline Leavitt appeared to confirm a classified report about damage U.S. missiles did to Iran.

Is "runner's high" truly an endorphin rush? Let's break down the phenomenon of runner's high and the many mental benefits of running.

Daryl Kimball, executive director of Arms control Association, joins ABC News Live to discuss Iran’s nuclear future after the U.S. strikes.

What happens to your body when you stop eating sugar? OK, I committed to giving up all added sugar for a week. And I will admit, the first few days were a little rough.

Vital Records Index NYC reports global population is set to peak at 10.3B by 2080s, then decline, prompting economic and demographic shifts.

Dr. James McCaffrey presents a complete end-to-end demonstration of the kernel ridge regression technique to predict a single ...

Dear Inheritance: Although you and your husband are, rightfully, navigating life together, up to and including what happens after you’re gone, it’s helpful to remember that you and he have ...

Another major question is what happens with negotiations over Iran’s nuclear program. It is not entirely clear who in Iran has the authority to make a deal or even agree to reenter talks .

The Trump administration is withholding more than $6 billion in federal grants for after-school and summer programs, English language instruction, adult literacy and more.