Envoys for Iran and the United States have engaged in four rounds of talks. But exactly what a deal would look like remained ...

Greenhouse-gas emissions get all the attention, but their effect is manageable and unfolds over decades.

Nuclear waste and radioactive plutonium would be assessed as a fuel for reactors under a draft executive order being ...

"We're in very serious negotiations with Iran for long-term peace," President Donald Trump said on a tour of the Persian Gulf ...

The prospect of a nuclear deal between the U.S. and Iran contributed to the biggest daily drop in oil prices so far this ...

A new study published in Physical Review D titled, "Extending the Bridge Connecting Chiral Lagrangians and QCD Gaussian ...

After initially teasing that he may jet off to Istanbul for the Ukraine-Russia peace talks, Trump threw water on the matter ...

Wall Street is veering lower while oil prices are down more than $2 a barrel as traders bet on a possible U.S.-Iran nuclear ...

The fast-moving conflict between India and Pakistan last week demonstrated the inherent dangers of the modern nuclear age.

Throughout his visit with Arab Gulf leaders this week, Trump has underscored that military action against Iran’s nuclear ...

US President Donald Trump said on Thursday that Washington is “very close” to reaching a nuclear deal with Iran after Tehran ...

President Donald Trump, in an exchange with reporters at a business roundtable in Doha, Qatar, described the talks between ...