In my January 23, 2026, “The Universe” column, I wrote about some of the biggest bangs the universe has to offer: exploding stars, hiccupping magnetars, stellar disruptions and colliding black holes.

While you’re drinking, alcohol causes blood vessels to dilate, bringing blood to the surface of the skin. That’s why people ...

Calcium supplements may slightly lower blood pressure. It does this by supporting blood vessel function and by reducing parathyroid hormone levels. Taking calcium supplements over 1,000 milligrams a ...

Sudden or severe cold temperature can cause trees to experience "frost crack." NPR's Scott Simon talks with Bill McNee of the Wisconsin Department of Natural Resources about what happens and why. If a ...