Since Edmund Hillary and Tenzing Norgay climbed Mount Everest, Mount Qomolangma's peak is no longer a lonely place and is turning into a trash heap.

    So far, more than 350 climbers have successfully reached the peak. And they have complained about waiting for hours in the bottlenecks (狭窄路段) on the way to the peak, a situation that isn't just uncomfortable — it's cold and windy up there — but downright dangerous. If bad weather strikes, climbers can and do die.

    As a matter of fact, the dangerous crowds aren't the only problem on Qomolangma. All those climbers need to bring a lot of gear—and much of them ends up being left on the mountain, sometimes even the peak itself. Mount Qomolangma is becoming the world's largest dump. Here's mountaineer Mark Jenkins writing in National Geographic about the state of Qomolangma: “The two standard routes, the Northeast Ridge and the Southeast Ridge, are disgustingly polluted with oxygen cans and torn tents everywhere.”

    But the good news is that some mountaineers are taking it upon themselves to clean up Qomolangma. Mountianeer Paul Thelen and his friend Eberhard Schaaf are part of the annual Eco Everest Expedition, which has been cleaning up rubbish from base camps to the peak since 2008. So far they've collected over 13 tons of garbage.

    Some of that rubbish is even being used for a higher purpose. As part of the Mount Everest 8844 Art Project, a group of 15 artists from Nepal collected 1.5 tons of garbage brought down the mountain by climbers. They've transformed the cans and oxygen tanks—and in one case, part of the remains of a helicopter—into 74 pieces of art that have already gone on exhibition in Nepal's capital. Part of the profit from sales will go to the Everest Peakers Association, which has helped collect tons of rubbish on the slopes of the mountain.

    How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush and it lets you track your performance on your phone.

    The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.

    The toothbrush will be able to teach you to brush right (don't forget the insides of the teeth!) and make sure you're brushing long enough. “It's kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.

    The toothbrush will also be able to talk to other applications on your phone, so developers could, for example, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart and fun,” Serval says.

    Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.

    The company says the Kolibree will go on sale this summer, from $99 to $199, and the U.S. is the first target market.

    What do you plan to do this summer vacation? Do you want to travel over the sea, experience the ocean wave and enjoy the wonderful sea scenery? If that is what you want, come and sail on a Crystal Cruise ship (游轮). We have three ships: The Crystal Queen, The Crystal Princess, The Crystal Palace.

    Come and sail in luxury (奢侈) on cruises around the Caribbean Sea for 7 or 14 days.

    Our seven-day cruise costs $2,000 and our two-week cruise is $3,500. A typical one week cruise:

    Day One— set off from Miami

    Day Two— free day in Nassau, in The Bahamas Day Three— near Haiti

    Day Four— visit Puerto Rico and Antigua Day Five— free day in Barbados

    Day Six— free day in Port of Spain, Trinidad Day Seven— travel to Caracas, Venezuela Day Eight— fly home.

    All food and drink is included in the price of your cruise (except for wines). Our cruise ships all have a cinema, a five-star restaurant, a theatre, a library and a gym. However, you have to pay extra money to enjoy the films and plays.

    If you prefer to go on a cruise in another part of the world, we also organize cruises in the Baltic Sea and the Mediterranean.

    Our ships carry over 2,000 passengers and we have nearly 600 crew members in all. So come on board today for the holiday of a lifetime!

    Call immediately: 020-4455832

    I'm sure you will enjoy your luxury cruise ship journey very much!

    In 1888 an Egyptian farmer digging in the sand near the village of Istabl Antar uncovered a mass grave. The bodies weren't human. They were feline — ancient cats that had been mummified(木乃伊化的) and buried in holes in astonishing numbers. "Not one or two here and there", reported English Illustrated Magazine, "but dozens, hundreds, hundreds of thousands, a layer of them, a layer thicker than most coal joints, ten to twenty cats deep. " Some of the linen-wrapped cats still looked presentable, and a few even had golden faces. Village children peddled the best ones to tourists for change; the rest were sold as fertilizer. One ship transported about 180,000, weighing some 38, 000 pounds, to Liverpool to be spread on the fields of England.

    Those were the days of generously funded explorations—that dragged through acres of desert in their quest for royal tombs, and for splendid gold and painted masks to decorate the estates and museums of Europe and America. The many thousands of mummified animals that turned up at religious sites throughout Egypt were just things to be cleared away to get at the good stuff. Few people studied them, and their importance was generally unrecognized.

    In the century since then, archaeology has become less of a treasure hunt and more of a science. Archaeologists now realize that much of their sites' wealth lies in the majority of details about ordinary folks—what they did, what they thought, how they prayed. And animal mummies are a big part of that.

    "They're really displays of daily life," says Egyptologist Salima Ikram. After peering beneath bandages with x-rays and cataloguing her findings, she created a gallery for the collection — a bridge between people today and those of long ago. "You look at these mummified animals, and suddenly you say, Oh, King So-and-So had a pet. I have a pet. And instead of being at a distance of 5,000-plus years, the ancient Egyptians become clearer and closer to us."

    In 2013, Gabby Frost founded Buddy Project when she was 15. At that time her best friend had been diagnosed(诊断)with a mental health condition, and that was the first time she was made aware of what mental illness was. She wanted to learn more and develop a good support system for her.

    Mental illness affects tens of millions of people in the United States each year, yet only half receive treatment, according to the National Institutes of Mental Health. Buddy Project's website says the service is not a substitute for therapy( 治疗)or other types of mental health care, and it directs people to resources for further help.

    Since founding the organization as a high school student, Frost has helped more than 200, 000 participants find a new friend. On the day when Buddy Project was launched, she used her powerful social media presence to attract nearly 3, 000 participants. "This was around the time when teens really began talking about mental health and found a supportive community online to talk about it,"she said.

    One of the biggest social barriers she had to jump over was that people didn't view her seriously because she was a 15-year-old girl, and even now, she's still a young woman. "Sometimes it's frustrating because people don't think what I do is needed or they don't think I'm professional" she said. "Most people are blown away that a 20-year-old girl is running this and that it's one person doing this but not a whole team. I'm just lucky that I've found a support system that has been able to help my mom and me with the project.

    Wong Fuk-wing, a Hong Kong volunteer at an orphanage (孤儿院) in Yushu, was killed in the earthquake when he was trying to save others on April 14, 2010.

    Wong managed to run safely out of the building with some children when the first quake happened at 7:50 am on April 14, but he went back inside to rescue three other children and three teachers inside, although he knew the danger of aftershocks (余震).

    At 10 am, all the children and one of the teachers were saved. However, Wong was buried under the fallen building and died. The other two teachers were still waiting to be rescued.

    46-year-old Wong was a truck driver, who often said he could only give his efforts to charity instead of money, as he did not earn a lot. His tragic (悲剧的) end touched the hearts of many people both in Hong Kong and on the mainland.

    Wong began volunteering in 2002. In 2003, Wong was told by the doctor he got serious illness, which gave him a great blow. However, the illness did not deter the warm-hearted man. When the earthquake struck Wenchuan in Sichuan Province in 2008, Wong rushed to the disaster area of Shifang to offer his help though his family did not want him to go.

    In fact, Qinghai is a place Wong had often visited since 2006. As a volunteer, he gave out medicine and clothing to the orphanage there. No one could expect that Wong would die helping others.

    Hong Kong Chief Secretary Henry Tang Ying-yen said he had "the highest respect" for the hero who gave his life for others. "What he did has shown the Hong Kong spirit." The citizens of Hong Kong called him "the pride of Hong Kong's people" and people on the mainland have also praised him as "a true hero".