The Associated Press is running a story on Pi. Or rather, people who like Pi so much they get together to talk about it.
But in yet another example of poor understanding (or poor writing at least) about science in the mass media, AP reports that Pi is:
"made up of a chain that is known — so far — to be more than one trillion digits long"
Of course, it is known that Pi is an infinite number of digits long, of which more than one trillion are actually known. A minor difference, perhaps, but maths are funny that way: even small distinctions matter.