In recent years, we've seen an increase in the intensity of tropical storms and hurricanes due to global warming. But how and why do hurricanes form? Sigrid provides a basic explanation of this phenomenon.

We continue to explore the phenomenon of hurricanes. Why are they so dangerous? And do they serve any purpose?

Columbus Day has always been a controversial holiday in the United States. In this video, Sigrid goes back in time to get some historical background, which sheds a new light on its significance.

Most Americans don't realize how Columbus Day came to be a national holiday, but it actually doesn't have that much to do with Christopher Columbus, and we might even recognize a connection to present-day events. To recall something Mark Twain once supposedly said, "History doesn't repeat itself, but it often rhymes."

The European Union has been in the news a lot lately, so let's take a look at what it's all about. What is a "union" and what's the purpose of this one?

What's the difference between disinformation and misinformation? And what about misleading information? Find out in this video.

Audio and video sources can be factual, and can be used as evidence, but they can both be doctored, too. When we don't have the facts, we might have hearsay, but can we trust it?

An SUP instruction with Dave Kalama of Naish Surfing. Lesson 3 – How to stand up on your board.

An SUP instruction with Dave Kalama of Naish Surfing. Lesson 6 – How to lie down.

An SUP instruction with Dave Kalama of Naish Surfing. Lesson 7 – How to come in and get off your board.

Kirk tries to reason with the human side of Nurse Chapel's fiancé, Roger, before he and his android are zapped away. This clip is from the episode "What Little Girls Are Made Of" of the legendary series Star Trek.

This is a public service announcement of the Obama administration on ending sexual assault. President Obama is joined by Vice President Biden, Daniel Craig, Benicio Del Toro, Dulé Hill, Seth Meyers and Steve Carell.

Stu escapes from the facility and again hears Abagail Freemantle's voice telling him to come find her.

Steve Skaith of the band Latin Quarter performs "A Bankrobber’s Lament" from the album "The Imagination of Thieves."

Steve Skaith performing 'Branded' from the Latin Quarter album 'Bringing Rosa Home'.