"One" and "ones" can replace nouns, but are not pronouns. They are prop words. Let's look at how they are used.

Why are some rock formations and animals found on more than one continent? The explanation dates back to the Ice Age.

Canadian singer Shawn Mendes released "Nervous" on his third studio album. It's a song about meeting a new potential love interest.

The Dropkick Murphys – an American Celtic band from Quincy, Massachusetts – level some heavy and hilarious criticism at Christmas and family members, but they are also having an awfully good time celebrating the holidays.

The birth cycle of kangaroos, affectionately called “roos,” is the subject of this video from National Geographic.

Why do some of the national parks in the United States resemble the European Alps? Geologist Dr. Robert Darga answers this question.

Prince said this about his song: "...Stay happy, stay focused, and you can beat the de-elevator [the "down" elevator as a metaphor for Satan]." It may be hard to understand the lyrics in this performance, but they're worth checking out. Find extended lyrics here

Natalie provides some tips for wasting less plastic and leaves us with a slogan to help us rethink our flushing habits. She involves the audience to bring the message home.

This song from the album “A Night at the Opera” is considered one of the greatest rocks songs of all time. Music industry producers thought it was too long, at just under six minutes in length, and that no one would listen to it. Instead, it is the most streamed piece of music from the 20th century.

Meet Sheldon, he’s been driving pizzas longer than anyone at Bob’s Pizza. He seems to be a little too comfortable in his role of senior pizza driver!

Here's the trailer for an inspiring film about the efforts of ordinary people to make the world a more sustainable place. Experts talk about the necessity of taking action.

Go behind the scenes of Entertainment Weekly's cover shoot with Dwayne Johnson as he gets into the holiday spirit! He has fun playing “Dwanta Claus,” lists his favorite holiday movie and song, and talks about his appreciation of the gifts he receives from fans.

Ellen and Channing talk a bit about Magic Mike, a show in Vegas, and go on to talk about the animated movie Smallfoot, where he does the voice of Migo.

Topsy and Tim give us a countdown of their favorite things about Christmas. The twins are featured on the BBC's CBeebies, a TV channel for pre-schoolers.

In this famous live performance, David Bowie and Tina Turner perform a duo version of "Tonight," a song originally written by Iggy Pop and Bowie. The lyrics are simple and repetitive, but when the two stars get together onstage, there's magic.