Oil prices drop due to positive progress in U.S.-Iran talks. Discover how this impacts the market and fuel demand.

Solar and wind accounted for 98% of new US electrical generating capacity added in the first two months of 2025, according to new FERC data.

Chemists have confirmed a 67-year-old theory about vitamin B1 by stabilizing a reactive molecule in water - a feat long thought impossible.

As the U.S. and Iran engage in high-stakes negotiations, NBC News’ Richard Engel visits a bazaar in Tehran, where citizens say they’re hopeful a deal could improve their economic outlook.