Both the Mississippi River and the Colorado River have a huge impact on the lives of millions of Americans. While there have been severe droughts leading to a lack of drinking water, there have also been floods because of quickly melting snow.

It's been a stormy and fiery year in the United States, both weather-wise and in the government.

What's the difference between "clean" and "dirty" energy? Sigrid reports on different kinds of energy and discusses trends in heating our homes.

A first for the United States: A jury found a former president guilty of a serious crime in New York. Here are some details and plenty of new words to learn!

The song "Run" is from Irish band Snow Patrol's album "Final Straw." The video features frontman Gary Lightbody in a forest at nighttime.

How football arrived in Australia and the state of the game heading into the 2014 FIFA World Cup Brazil™.

Some history, some soccer and some fun facts on the USA and the state of the game heading into the 2014 FIFA World Cup Brazil™.

Spin Doctors is an American alternative rock band formed in New York City.

"Two Princes" peaked on the Billboard Hot 100 chart at No. 7.

Listen to Portuguese folk/rock band Spleen Poetry. Enjoy their melancholic tune.

Let's find out more about an American activity aimed at school kids: the spelling bee. What is it and how does it work?

Sigrid talks about "The Elementary Spelling Book" by Noah Webster, which was the basis for the American English dictionary and a big part of the development of spelling bees in the United States.

Sigrid explains how a spelling bee normally proceeds. There are fixed rules and there are options.

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.