Possessive apostrophes show who or what owns something. The apostrophe goes in a different place depending on whether the owner is singular (one) or plural (more than one). Be careful with the word ...

Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

Apr. 7, 2026 A gene called KLF5 may be a key force behind the spread of pancreatic cancer—but not in the way scientists expected. Rather than mutating DNA, it rewires how genes are turned on and off, ...