She speaks English and a little French. Almost all of the gray matter in the brains of women changes during pregnancy, according to a recent study, and these changes are linked to hormone ...

Because we haven't found anything yet, we've started to wonder if dark matter might be lighter or heavier than we thought. Dark matter can't be too heavy or it might break our best model of the ...

How could such a tiny piece of matter have mattered so much? After all, as Mr. Tonelli suggests in the subtitle to his book, matter is a “magnificent illusion.” Mr. Tonelli bookends “Matter ...

The cores of galaxies may not be made of what we thought, new research suggests — they could hold one giant, invisible star made of mysterious "fuzzy" matter. When you purchase through links on ...