The first living creatures to travel in space were the dogs of the Soviet Unions space program.Beginning in 1951 dogs flew aboard sub－orbital flights to the height of 63 miles and higher.They helped to test the equipment that would later be used by humans.The first pair of dogs to fly，on July 22，1951，were named Tsygan and Dezik.

     Space dogs would make history on November 3，1957.On this date，just one month after the historic launch of the world's first artificial satellite，Sputnik，the Soviet Union shocked the world again by launching Sputnik 2.This satellite contained the first living creature to travel in space，a dog named Laika.Laika was to have orbited for a week or more until her food and oxygen ran out.In fact，Laika lasted only hours in orbit before over heating in her capsule(太空舱) took her life.

     That next step，occurred in August 1960，when the dogs Belka and Strelka made 18 orbits of earth and returned alive.Like Laika before them，they became distinguished ， featured in newspapers and magazines around the world.

     Six more orbital dog flights over the next eight months further tested the equipment necessary for humans to follow in the dogs' footsteps.That historic event happened on April 12，1961，when Yuri Gagarin became the first human to travel in space.

     The role of the space dogs had proven important in advancing the exploration of space.But，they would make one final flight.In 1966，traveling aboard the Cosmos 110 satellite，the dogs Ugolek and Veterok spent 22 days in orbit.Once again dogs led the way.Humans would not achieve a space flight that long for eight more years，in Skylab 2.

    Almost one in five drivers had dozed off behind the wheel, a shocking news report had showed. Of those who were dozing off, 29% have done so with their cars speeding at 70 miles per hour. The report also found a quarter of men have fallen asleep while driving, making it almost twice as many as women.

    The Safety on Wheel Report, by Post Office Insurance, also looked at how often tiredness or a lack of concentration caused accidents. Three in ten drivers have experienced an accident, from passing a walker crossing to hitting another vehicle, because of a lack of concentration. Meanwhile, almost half (49%) of UK drivers have driven when they do not concentrate.

    Paul Haven hand, head of insurance at Post Office, said, “ When tiredness strikes, drivers should avoid the roads.” There is no measurement for tired driving, unlike driving under the influence of alcohol, yet it could result in an equally dangerous accident.

    Drivers are advised to take a 15-minute break from driving every two hours. However, a third (36%) are so eager to reach their destination that they will ignore feelings of tiredness. What's more, almost one in five (18%) will drive for longer than four hours without a break, while 6% carry on for up to 6 hours. Just over a quarter (27%) choose a quick stop to buy a cup of coffee, which is a very popular way for drivers to get rid of tiredness, and only 17% stop to have a rest until they feel energetic again. Mr. Havenhand added, “Drivers should plan ahead and rest before starting a long journey; besides, they can take regular breaks to recharge their batteries while on road; in some cases, if they do feel too tired to concentrate on the roads, they could consider an alternative means of transport.”

    Customers who come into the Waffle House recognize server Evoni Williams, a soft-spoken 18-year-old from Texas City. It all started with a Facebook post. On the morning of March 3, Laura Wolf was eating breakfast at the Waffle House in La Marque when she overheard an older man, who reminded her of her late father, tell Williams he had trouble with his hands. The man, later identified as regular customer Adrien Charpentier, had an oxygen tank nearby and needed help cutting up his food. “Without hesitation,” Wolf wrote, Williams “took his plate and began cutting up his ham.”

    Impressed, Wolf posted the moment on her Facebook page to share the warmth and kindness with all. The following day, Williams's Facebook notification（关注）began to light up. Her friends saw Wolf's post and tracked her in it.

    Williams had no idea that someone took a photo that morning. The diner was so busy that a line extended outside the door. She said helping Charpentier was reflexive. She has been working at Waffle House since last June to save for college, and this, she figured, was just the right thing to do. “I would want someone to help my grandmother or grandfather,” Williams said.

    The post began to make its rounds in La Marque and eventually landed in front of the city's mayor, Bobby Hocking. He decided to declare March 8 as Williams's day, and also received an email from Texas Southern University President Austin A.Lane, asking if the school could present Williams with a scholarship.

    Williams still works at Waffle House five days a week and plans to do so until she starts classes in the fall at Houston-based Texas Southern. Wolf said Williams does not have a car to get to classes, but some people have offered to start a GoFundMe page for her, proving that a moment of a kindness can change a life.

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    The negative (负面的) health effects of sleep shortages during the week can't be changed by marathon weekend sleep sessions, according to a new study.

    Researchers have long known that routine sleep deprivation (缺乏) can cause weight gain and increase other health risks, including diabetes. But there are still some people who hope that shutting off the alarm on Saturday and Sunday will repay the weekly sleep debt and remove any ill effects.

    The research, published in Current Biology, ruins those hopes. Despite complete freedom to sleep in and nap during a weekend recovery period, participants in a sleep laboratory who were limited to five hours of sleep on weekdays gained nearly three pounds over two weeks and experienced metabolic disruption (代谢紊乱) that would increase their risk for diabetes over the long term. While weekend recovery sleep had some benefits after a single week of inadequate sleep, those gains were wiped out when people returned right to their same sleep schedule the next Monday.

    "If there are benefits of catch-up sleep, they're gone when you go back to your routine. It's very short-lived," said Kenneth Wright, who led the research. "These health effects are long-term. It's kind of like smoking once was — people would smoke and wouldn't see an immediate effect on their health, but people will say now that smoking is not a healthy lifestyle choice. I think sleep is in the early stage of where smoking used to be."

    Wright said that the study suggests people should prioritize sleep — cutting out the optional "sleep stealers" such as watching television shows or spending time on electronic equipment. Even when people don't have a choice about losing sleep due to child-care responsibilities or job schedules, they should think about prioritizing sleep in the same way they would think about a healthy diet or exercise.

A boy who has been climbing the equivalent（等量）of Mount Qomolangma in aid of a children's hospice（救济院）is about to reach his fundraising goal of £29,031. Six-year-old Oscar, from Lancaster, has climbed 10 of the UK's highest mountains to help Chorley's Derian House. He said he needed two more to match Mount Qomolangma's 29,031 feet height.

Oscar started his challenge on October 9, 2022, and Ingleborough in the Yorkshire Dales was the first mountain to be chosen. He said that the hardest climb so far had been Cairn Gorm in the Scottish Highlands because the snow was so deep.

Oscar took on the challenge in the hope of raising enough money to send 29 children with life-limiting illnesses on holiday. "I wanted to be the youngest person to climb Mount Qomolangma and I have climbed 10 out of 12 mountains. When I get older, I want to climb the real Mount Qomolangma," Oscar said.

"It was amazing what a child's dream can achieve. We're speechless and couldn't be prouder. We were grateful to everyone that supported us along Oscar's journey," Oscar's father Matt wrote on the social media.

Oscar and his family hoped to make their final climb on Ben Nevis in Scotland on May 29, 2023. The climb would mark not only the completion of Oscar's challenge, but also the 70th anniversary of the first successful ascent（攀登）of Mount Qomolangma by Edmund Hillary and Tenzing Norgay.

"For every foot he climbed, our children would get a pound to achieve their dreams. The total £29,031 raised by Oscar would help support the work of the hospice, which provides end-of-life care to more than 400 children across the northwest of England," said Karen Edwards, a senior official of Derian House.

"The six-year-old was an unbelievable little boy who had truly gone to great heights. How many six-year-olds could say that they have climbed the height of Mount Qomolangma?" Karen added.