Watch some coverage of the People's Climate March that was timed to coincide with the UN Climate Summit in New York City. The march was attended by 400,000 people.

“Don't Answer Me” is a song by Alan Parsons and Eric Woolfson, the British duo behind the Alan Parsons Project. This is their first music video, which features an award-winning animation by Michael Kaluta, inspired by 1930s comic strips.

Geysers represent a very popular tourist attraction in Yellowstone Park. How do they work and where do they come from? And what is sandstone? The video answers these questions.

"China Girl" was originally co-written by David Bowie and Iggy Pop when they lived in Berlin. Although there are many interpretations of the song's meaning, the video particularly looks at and parodies Asian female stereotypes.

Natalie Fee concludes her Ted Talk with a few suggestions for what we can do to reduce how much single-use plastic we are sending into the earth's waterways.

In Yellowstone Park, visitors can see many indigenous animals in their natural habitat and wonder at the park's natural hot springs.

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

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

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!

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

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.

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.

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.

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.

Miley Cyrus and Ariana Grande perform the song "Don't Dream It's Over" by Crowded House at One Love Manchester. The event was organized by Ariana Grande in response to the bombing after her concert at Manchester Arena.