In alpha-gal syndrome, the immune system overreacts to a sugar known as galactose-α-1,3-galactose, or "alpha-gal" for short.

Discover the history of our feline friends, and learn about the debate over whether cats are really "domesticated" at all.

"The singularity is the most mysterious and problematic part of a black hole. It's where our concepts of space and time ...

So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

The Small Magellanic Cloud, a dwarf galaxy about 200,000 light-years from the solar system, can be seen with the naked eye ...

Hycean worlds, which are a possible kind of exoplanet with deep oceans surrounded by a thick envelope of hydrogen, could ...