In pictures: 15 of the world’s most extreme drives

Editor’s Note: For the latest version of this story, see The World’s Most and Least Expensive Cities, Ranked.

We all know that air travel isn’t great for the environment, but a new study has found that tourism is four times worse for the environment than previously thought. The alarming research conducted by University of Sydney researchers and published in the journal Nature Climate Change found that the tourism industry (including direct sources like flights and indirect sources such as souvenir manufacturing) is responsible for eight percent of global greenhouse emissions, which is four times higher than scientists had previously estimated.

If you want to stay at the best hotel in the United States, head to the French Quarter Inn in Charleston, South Carolina. And if you’re looking for the best bargain hotel stay in the world, it’s in a small town in northern Spain. That’s according to TripAdvisor’s Travelers’ Choice Awards, which just shared the best hotel ratings for multiple categories heading into 2019.

With rideshare apps like Uber and Lyft taking over, you might be wondering where in the world it’s still possible to take a cheap taxi. Cabs aren’t dead, yet: These countries still heavily rely on them.

The rugged landscapes of the Outer Hebrides, off Scotland’s west coast, may be sparsely populated, but there’s a deep human history here, from ancient stone circles to traditional Gaelic culture. These interconnected islands have shaped a distinct way of life, not just in the Harris Tweed and whisky distilleries that travellers encounter, but also in the daily routines of remote fishing communities. Spanning over 150 miles, this island chain is stitched together by causeway, bridge, road and boat, meaning visitors can pick their own method — car, bike, bus or ferry — to make the most of this extraordinary destination.

Backpacking can be one of the most rewarding ways to travel – with little more than your clothes on your back and an onward ticket in your hand. But where are the world’s best backpacking destinations? We asked our readers, and here are the results.

Running along the shimmering Arctic tundra in Greenland, jogging across the African savannah and racing through the Amazon are some of the exhilarating marathon experiences now on offer around the globe. From coastal routes in Jamaica and California to challenging courses in the blazing Sahara and freezing Polar Circle, a growing number of endurance events provide a dramatic change of scene and pace. Read on for our pick of the world's best marathons.

Whether it’s a friendly face at check in or a taxi driver who’s full of useful tips, nothing beats getting a warm welcome on your travels – and our interactions with local people have a huge impact on how we view countries as a whole. We asked our Facebook and Twitter followers to share where they’ve found the most hospitable places around the world. Here’s what they said.

The ‘roof of the world’ has exerted a magnetic pull over travellers and adventurers for centuries. This vast, high altitude desert has spawned myths and legends since the dawn of time. Its mountains are home to the Hindu Gods, the scenery is awe-inspiring, its Buddhist monasteries are filled with art and treasure and the religious devotion of its people is humbling.

No matter where in the world you're headed, we bet you're looking forward to a delicious meal or two. And many of the dishes easiest on the pocket are the tastiest on the tastebuds too.

There are places in the world where little sign of western development exists, but it still threatens to change traditions and beliefs forever. Jimmy Nelson found and documented 31 of these traditional isolated communities in his quest to photograph the «purity of humanity».

As all travellers know, the world can be a weird and wonderful place, as seen in this overview of weird world fashion, from the exuberance of Bahamian Junkanoo parades, to Britain's Royal Ascot Ladies Day.