We continue our tour of Russian cities hosting the 2018 World Cup. We're taken to Kazan, Rostov, and Ekaterinburg.

Russia is gearing up to host the 2018 World Cup. Sarah Rainsford and Steve Rosenberg, the BBC’s Moscow correspondents, take us on a tour of Sochi, Volgograd, and Saransk, where we can see the stadiums that have been constructed and get a sense of each town.

Ellis Island, the U.S. gateway to immigration from distant lands, has been reopened to visitors, following significant damage from Hurricane Sandy. A visit there, and to the nearby Statue of Liberty, can be emotional, even for those born in the U.S.

A look at the communications of Humpback Whales and other baleen whales, which includes how they sing, why they sing, and why we might consider their vocalizations actual songs.

Coal mining companies and their billionaire owners have titanic plans for Australia. But what disaster course are we on? Take a look to find out what they'd prefer you not to know. Take Action!

Doreen Cruz from Little Shop of Crafts in New York explains to us how her workplace functions as a creative outlet for both children and adults.

A humorous look at American English from a British point of view.

Many secrets remain surrounding the creation of Stonehenge. Archaeologists try to unravel the mystery.

A look at how lexicographers started creating the Dictionary of the English Language to ensure that everyone spelled words correctly and knew their correct definition.

Agricultural and corporate interests have long dominated Florida legislature, despite protests from residents and a substantial threat to civilians.

Florida might seem like paradise, but water contamination is a big problem, affecting not only the environment, but businesses and the health of the residents.

Over the last two decades, the environmental crisis of Florida’s Lake Okeechobee has continued to worsen and dominate local headlines. The lake is the nation’s second largest freshwater lake, but due to years of missteps, it’s been producing massive amounts of toxic algae that have closed beaches, destroyed businesses and poisoned swimmers.

They can flow like a liquid and bounce back like a solid. Masses of fire ants show a duality that intrigues physicists.

Although no one will ever be completely certain why it occurred, many things have been learned about both species from the attack.

How do sharks communicate? Particularly, how would the sharks around the Farallones all know exactly when to evacuate? Scientists who are working on "shark repellent" may have an explanation.

Here we see a simulation of how the attack happened, and find out what effect it had on the population of great white sharks around the Farallon Islands.

Rosetta revisits the exciting scientific discoveries she has made during her time at Comet 67P/Churyumov-Gerasimenko, including the successful search to find Philae. Now it's time to start preparing to descend to the comet for the end of her extraordinary mission.

The phenomenon of tonic immobility helps researchers study sharks, but does it also help orcas hunt and kill them?

Created in 1611, The King James Bible permanently shaped the English language with new phrases that are still in use today. How many of them do you know?

Some orcas do prey on sharks, but how do they do it? Researchers also have to catch sharks occasionally, and there is a particular technique that they use.

So if an orca attacking a shark is so rare, how do they usually behave? In this segment, we learn about how orcas around the world live and hunt.

Why would a killer whale go after a great white shark? Enter Alisa Schulman-Janiger, a biologist who is very familiar with the different families of killer whales off the coast of California.

This video shows us that Shakespeare invented over 2000 new words and phrases, such as "eyeball," "anchovy," and "puppy."

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains the process.