Every fall, the monarch butterflies migrate back to their breeding grounds in California. These fascinating and stunningly beautiful creatures weigh only a gram, yet travel extraordinary distances to complete their lifecycle. In the early spring, deep in the Yosemite valley, the sun warms the wet ground, forming clouds of misty fog.

Watch the famous speech delivered by Charlie Chaplin's character in the film The Great Dictator from 1940. "We think too much and feel too little. More than machinery we need humanity. More than cleverness we need kindness and gentleness."

The Blippi Sink or Float game is a fun science experiment for kids, helping to explain density and buoyancy. In this video, Blippi takes us to gather some interesting items, and still finds time to get dizzy playing on the playground. Then, he’s back indoors and ready to see which of the objects will sink... or float!

This is Dido performing “Thank You,” the hit song from her debut album No Angel. Life is not always easy, but Dido is thankful to have a special person who makes everything all right.

The Ocean Cleanup is a Netherlands-based, non-government environmental engineering organization that develops technology to extract plastic pollution from the oceans. They have developed a "passive" cleanup system that takes advantage of the natural oceanic forces of wind, water, and currents.

"Nothing Breaks Like a Heart" is the lead single from British musician Mark Ronson’s album Late Night Feelings and features American superstar Miley Cyrus, with whom he co-wrote the song. It carries the unmistakable melancholy of something coming to an end, or as she sings, "Things fall apart, but nothing breaks like a heart."

Opposition MPs react after parliament voted against Boris Johnson's extremely tight Brexit bill timetable, which the government said was necessary to reach the prime minister’s target of leaving the EU on October 31st.

Kelp is a fascinating plant. What we see on the surface has little in common with what's actually there. Californian harbor seals are mammals but they do a lot of hunting underwater.

"Big Yellow Taxi" was originally written by Joni Mitchell while she was in Hawaii and considering the effect of humans on their environment and how we often take things for granted. This version is performed by the band Counting Crows from Berkeley, California and features vocals by Vanessa Carlton.

Host Kaley Cuoco of The Big Bang Theory opens the 38th annual People's Choice Awards, which seems to be going smoothly until her monologue is crashed by Neil Patrick Harris of the TV series How I Met Your Mother.

Even though Prime Minister Boris Johnson has said he does not want a delay, he confirmed he would set aside the bill until speaking further with the EU. He thanked the House of Commons for their assent.

When someone is "on a roll," they are having success and it feels like it will continue. American singer Miley Cyrus, performing under the moniker "Ashley O" sings this song, which was featured in the science fiction television series Black Mirror.

With longer adjectives, we have to add some extra words in order to form the comparative and superlative. Sigrid explains how.

What's happening with Brexit? In Parliament, Labour MP Karl Turner makes a curious analogy between debating an important bill and choosing a sofa. Turner said MPs required more time to debate "this incredibly important bill," adding that Nikki da Costa, the PM's legislative adviser, had suggested the House needed at least four weeks to consider the legislation.

Everyone's heard of California, but this documentary showcases the state's natural beauty and wildlife. It has a fascinating range of geographical features and is home to many unique species of animals.