Tayka Hotel de Sal

Where: Tahua, Bolivia

How much: About $ 95 a night

Why it's cool: You've stayed at hotels made of brick or wood, but salt? That's something few can claim. Tayka Hotel de Sal is made totally ofsalt—including the beds (though you'll sleep on regular mattresses andblankets). The hotel sits on the Salar de Uyuni, a prehistoric dried-up lakewhich is the world's biggest salt flat. Builders use the salt from the 4,633-square-mile flat to make the bricks, and glue them together with a paste(糊) of wet salt that hardens when it dries. When rain starts to dissolve (溶解) the hotel, the owners just mix up more salt paste to strengthen the bricks.

Green Magic Nature Resort

Where: Vythiri, India

How much: About $ 240 a night

Why it's cool: Taking a pulley(滑轮)—operated lift 86 feet to your treetop room is just the start of your adventure. As you look out of your open window, there is no glass! You watch monkeys and birds inthe rain forest canopy(罩篷). Later you might test your fear of heights by crossing the handmade rope bridge to themain part of the hotel, or just sit on your bamboo bed and read. You don't evenhave to come down for breakfast—the hotel will send it up on the pulley-drawn“elevator”.

Dog Bark Park Inn B&B

Where: Cottonwood, Idaho

How much: $ 92 a night

Why it's cool: This doghouse isn't just for the family pet. SweetWilly is a 30-foot-tall dog with guest rooms in his belly. Climb the wooden stairs beside his hind leg to enter the door in his side. You can relax in the main bedroom, go up a few steps of the loft(阁楼) in Willy's head, or hang out inside his nose. Although you have a full private bathroom in your quarters, there is also a toilet in the 12-foot-tall fire hydrant(消防栓) outside.

Gamirasu Cave Hotel

Where: Ayvali, Turkey

How much: Between $ 130 and $ 450 a night

Why it's cool: Experience what it was like 5,000 years ago, when people lived in these mountain caves formed by volcanic ash. But your stay will be much more modern. Bathrooms and electricity provide what you expect from a modern hotel, and the white volcanic ash, called tufa, keeps the rooms cool insummer. (Don't worry— there is heat in winter.)

    Welcome to one of the largest collections of footwear（鞋类）in the world that will make you green with envy. Here at the Footwear Museum you can see exhibits（展品）from all over the world.You can find out about shoes worn by everyone from the Ancient Egyptians to pop stars.

Room 1

    The celebrity（名人）footwear section is probably the most popular in the entire museum.Started in the 1950s, there is a wide variety of shoes and boots belonging to everyone from queens and presidents to pop stars and actors! Most visitors find the celebrities' choice of footwear extremely interesting.

Room 2

    Most of our visitors are amazed and shocked by the collection of "special purpose" shoes on exhibition here at the Museum of Footwear.For example,there are Chinese shoes made of silk that were worn by women to tie their feet firmly to prevent them from growing too much!

Room 3

    As well as shoes and boots,the museum also exhibits shoe-shaped objects.The variety is unbelievable.For example,there is a metal lamp that resembles a pair of shoes,and Greek wine bottles that like legs!

The Footwear Library

    People come from all over the world to study in our excellent footwear library.Designers and researchers come here to look up information on anything and everything related to the subject of footwear.

    Oh my God, the robots are taking over! We're doomed! Doomed! Now that I've gotten that out of my system, it's become clear that while we may or may not be doomed, the robots are taking over. The latest example is the government's new guidelines for self-driving cars.

    Tesla, Google and Uber are already testing driverless cars in cities across America. Uber chief executive Travis Kalanick is among those predicting that by 2021, self-driving cars will play a big part in urban settings.

    Nearly 40,000 people died last year in this nation in automobile-related accidents, and we believe driverless cars can save tens of thousands of lives annually.

    It makes sense. Robot drivers are less likely to get drunk, drive without a license, text while driving or feel agitated at the scene of a traffic jam. On the other hand, I wonder how these highly sensitive cars will react with walkers constantly dashing into the street. Will they jam on the brakes every 10 seconds?

    But there's a bigger picture. Not only are robots replacing humans behind the wheel, but behind the work desk, in warehouses, senior homes, you name it. Robots aren't just taking over in the workplace.

    The question is, where can't a robot function better than a human? How about writing songs? A robot can go through every combination of notes in record time and come up with a pleasing melody. The lyrics might be a different story. Is a Grammy-winning song co-written by Hank Human and R-3071 in our future?

    Finally, it's only a matter of time until we have robot politicians and presidential candidates. Why not? They can be programmed to be experts in world and domestic affairs and come up with the best solutions without corruption and bad humors.

    Actually, it's too bad such technology isn't available in 2018. Pretty sure the robot would win in a landslide.

    It was a Saturday morning, a day I believed would end in victory. For weeks, I had been preparing for the match at the county fairgrounds, sponsored(赞助) by our local riding club. My horse, Tonka, and I could run faster than any kid in the county, and I hoped to bring home a blue ribbon.

    My mother usually drove me to the riding events, but on this day, my father planned to drop us off at the fairgrounds with the horse trailer(马车) .

    Although we never discussed it, my father's struggle with alcoholism had become the silent center of our family life. My mother was paralyzed with fear and indecision. Her salary as a part-time nurse couldn't possibly support four children. No one talked about alcoholism in those days, and it was my family secret.

    We climbed on the trailer and my father pulled out of our driveway and headed toward the fairgrounds, picking up speed once we hit the main road. It wasn't until we felt a big bump that I realized the trailer was out of control. The dream of my riding winner disappeared. Tonka lay on the floor, completely still. No words were possible. I knew he was dead.

    Suddenly a man appeared. "Are you all right?" he asked. "Yes." I answered, although I knew that nothing was all right. "Sit here on the grass," he said. He bent down to look into the trailer. Tonka remained still. He touched Tonka and then turned to face me. "He is going to be OK. He has just been knocked unconscious." He rubbed Tonka's cheeks and gently pulling his ears. Tonka rose to his feet.

    Our father was talking to a police officer. He was upset and in pain and took little notice of me. I looked back; the man was gone.

    I never forgot him. He gave me strength and a sense of hope in a dark and frightening moment.

    Alexa is a form of artificial intelligence, or AI for short. Many people start their mornings by asking Alexa for the weather forecast or the latest news. A device(设备) that houses Alexa can also play music from your favorite playlists, keep a shopping list, order takeout food, answer questions, send messages and even run “smart” home controls.

    Training AI systems to respond to problems with human-like intelligence and learn from their mistakes can take months, or even years. Consider Alexa and similar software, such as Apple's Siri. To do the tasks its human owners ask, these systems must make sense of and then respond to sentences such as, “Alexa, play my Ed Sheeran playlist” or “Siri, what is the capital of India?”

    Computers can't understand language as it is spoken by people. So AI researchers must find a way to help humans communicate with computers. The technology used to get computers to “understand” human speech or text is known as natural language processing. By natural language, computer scientists refer to the way people naturally talk or write. To teach an AI system a task like comprehending(理解) a sentence or responding to a person 's last move in a board game, scientists need to feed it lots of examples.

AlphaGo is an AI system designed by Google that has beaten a human champion, Lee Sedol, at the strategy(策略) board game Go. To train AlphaGo, Google had to show it 30 million Go moves that people had made while playing the game. Then AlphaGo used what it learned to analyze those plays as it played against different versions (版本) of itself. During this practice, the program came up with new moves—ones never seen in games between people.

    A new restaurant in Indonesia is on a mission (使命) to support locals trapped in poverty, many of whom are earning less than $25 a month, by providing them with an alternative way to pay for their food.

    The Methane Gas Canteen, run by husband and wife team Sarimin and Suyatmi, is located in an unexpected place for an eatery — Jatibarang Landfill. The landfill is a mountain of purifying waste, where poor locals spend their days collecting plastic and glass to sell. Meanwhile, the couple, who spent 40 years collecting waste before opening the restaurant, is busy cooking.

    What makes the restaurant unusual, aside from its location, is that no cash is required to pay for meals. Poor people have the option to pay for their food with recyclable waste instead of cash. Sarimin weighs the plastic customers bring in, calculates its worth, and then deduct that value from the cost of the meal, giving any extra value back to the customer. The scheme is part of the community's solution to reduce waste in the landfill and recycle non-degradable plastics.

    “I think we recycle 1 tonne of plastic waste a day, which is a lot. This way, the plastic waste doesn't pile up, drift down the river and cause flooding,” said Saimin. “It benefits everyone.”

    The restaurant seats about 30 people and serves meals that cost between $0.40 and $0.80 each. Since opening the canteen Sarimin and Suyatmi have seen their daily income more than double to $15 a day.

    “I'm happy to see our customers enjoying their meals,” Sarimin told NHK World. “The poor must also have the right to enjoy healthy eating. I want to give them that chance as much as possible.”