For years, people have wondered whether there's life on other planets. Scientists may now be closer than ever to answering that question.

    Using powerful telescopes, a team of astronomers in South America discovered a new planet, called Proxima b. It circles a star named Proxima Centauri, in the same way Earth circles the sun. Proxima Centauri is the closest star to our solar system.

    Scientists believe the new planet has a rocky surface and is similar in size to Earth. More important, they've determined that the distance between Proxima b and its “sun” gives the planet a similar temperature to Earth's.This means it could have liquid water. The presence of water on a planet makes it possible for life to exist there. Scientists refer to planets like Proxima b as “Goldilocks planets” because they are not too hot or too cold, but just right to possibly support life.

    Astronomers have found other Goldilocks planets in the past, but none are as close to Earth as Proxima b. Still, the new planet is 4.2 light years from Earth—that is about 25 trillion miles away.

    Despite the long distance, astronomers hope to get a much better look at our new-found neighbor one day. But they'll need to wait until more advanced telescopes are developed. They may also send a robotic spacecraft to investigate the planet.

    Recently, people in US education have gotten extremely worried because a new report has shown that American students have a math problem.

    The 2015 Program for International Student Assessment(评估)(PISA) shows math scores in the US getting lower and no improvement in science or reading. PISA tests 15-year-olds from different countries and regions in their math, science and reading skills. About 540, 000 students from 72 countries and regions took part in the assessment in 2015.

    US scores in reading and science were about the same as three years ago, leaving Americans near the middle of the bigger group. But the situation in math is much more worrying. The US average score was 470, below the OECD(经合组织)test average of 490, meaning the US was No. 40 among the 72 countries and areas. It was 12 points lower than in 2012 and 18 points lower than in 2009. So, what is going on with American students' math skills?

    One reason may be that the US does not teach math in enough depth. "Students are often good at answering the first part of a problem in the United States, "said Andreas Schleicher, director of education and skills at OECD. "But as soon as students have to go deeper and answer the more complicated part of a problem, they have difficulties. "In comparison, many high-performing countries and regions in math teach a lot less but focus in much greater depth,  especially when you look at East Asia, Japan and Singapore, according to Schleicher.

    Another reason may be the fact that many people in the US are unwilling to travel to foreign countries to learn better teaching practices. "One of our biggest challenges in the US is that the teachers are not going out and seeing what high-performing countries do differently, "said Wendy Kopp, who started Teach for America, in a news program.

    Mark is always engaged in his work. But this time he felt that it was time for him to take part in his community, so he went to the neighborhood meeting after work. The area city council woman was leading a discussion about how the quality of life was on the decline. The neighborhood faced many problems. Mark looked at the charts taped to the walls. There were charts for parking problems, crime, and for problems in empty buildings. Mark read from the charts, “Police patrols cut back, illegal parking up 20%”. People were supposed to suggest solutions to the council woman. It was too much for Mark. “The problems are too big”, he thought. He turned to the man next to him and said, “I think this is a waste of my time. Nothing I can do would make a difference here.”

    As he neared the bus stop on his way home, Mark saw a woman carrying a grocery bag, and a baby. As Mark got closer, her other child, a little boy, suddenly ran into the street. The woman tried to reach for him, but as she moved, her bag shifted, and groceries started to fall out. Mark ran to take the boy's arm and led him back to his mother. “You gotta stay with mom,” he said. Then he picked up the stray groceries while and the woman smiled in relief. “Thanks,” she said, “You've got great timing.” “Just being neighborly,” Mark said. As he rode home, he glanced at the walls of bus. On one of them was “Small acts of kindness add up.” Mark smiled and thought, “Maybe that's a good place to start.”

    Visit one of the most outstanding prehistoric sites in the United Kingdom, and enjoy amazing historic English attractions. Please notice that every tour starts and ends in London. Have a tour with visiting Britain.

    Stonehenge Direct Tour

    Visit one of the most outstanding prehistoric sites in England and in the world: Stonehenge.

    Duration：1 day

    Price：Adults ￡29.99，Children ￡28.99

    Stonehenge and Bath Tour

    Enjoy a late breakfast before heading to the Stonehenge site and end your day with an original visit to the Roman Baths.

    Duration：10 hours(departure 10：30 a．m.，return 8：30 p．m.)

    Price：Adults ￡64，Children ￡60

    Stonehenge, Bath and Windsor Castle Tour

    Explore three of England's most popular sites to visit: Windsor Castle, Stonehenge and the Roman Baths.

    Duration：1 day(return 8：30 p．m.)

    Price：Adults ￡64.80, Children ￡61.20

    Stonehenge, Lacock and Bath Tour

    Come and feel the warmth of Bath, see the pleasant village of Lacock, and solve the mystery of Stonehenge.

    Duration：1 day(return 6 p．m.)

    Price：Adults ￡85，Children ￡78

    Stonehenge, Windsor and Oxford Tour

    Choose Stonehenge ，Windsor and Oxford Tour and enjoy ancient mysticism, royal history and illustrious knowledge.

    Duration：1 day

    Price：Adults ￡72, Children ￡68

    Stonehenge, Bath and Stratford Tour

    Take a tour to make the most of the English historic attractions：the Stonehenge site, Bath and Stratford, the birthplace of playwright William Shakespeare.

    Duration：1 day(return 8 p．m.)

    Price：Adults ￡79, Children ￡68

    Australia is a developed country and the future of its solar industry is looking bright after a record 3.5m panels (嵌板) were installed on rooftops last year, giving the equal output of a medium-sized coal-fired power station. The record 1,057 MW of capacity (生产能力) in small-scale systems installed across the country broke the previous record set in 2012, figures from the Clean Energy Regulator showed on Tuesday.

    Australia's solar power prosperity could almost double capacity in a year. The data also revealed that the average system size has also doubled since then from three to six kilowatts as average prices continued to fall. A fully installed 5KW system costs an average of $5,930 in Australia, according to the energy broker Solarchoice. net. au. Its records show that the price has roughly halved in many capital cities since 2012.

    The regulator's executive general manager, Mark Williamson, said there was increasing interest in renewals as a way to take control of electricity bills. But more importantly, he said it was also good news for reducing carbon emissions.

    “We are seeing a wide cross-section of Australians-households, community centers, schools, and small businesses-receiving rewards under the small-scale renewable energy scheme,” Williamson said. “Our data shows consumers are embracing renewable energy to take control of their electricity bills.”

    In 2017, there was a 41% increase in installing renewable energy capacity across all states and territories compared to 2016. Queensland led the way with installed capacity at 295MW, with the Australian Capital Territory taking top place for the biggest annual increase by 57%. “The data collected by the Clean Energy Regulator in 2017 reflects the industry is going from strength to strength. It looks like 2018 will be another big year for the solar industry.”

    The total of installed capacity for last year is expected to rise to 1,070MW when all the data is collected. A large coal-fired power station such as Loyd Yang A in Victoria's Latrobe Valley has a capacity of 2,200MW.

Family Fun

    Not only is Buffalo family-friendly, we're also family-fun! If you have yet to pack the car, here are four activities to plan for your next family adventure in Buffalo.

    Animal House

    Take a walk on the wild side and visit with our animal friends! You can have some facetime with river otters (水獭) at the Buffalo Zoo. Get up close and personal with animals on a tour at Hidden Valley Animal Adventure, and develop your child's sense of wonder at Tifft Nature Preserve, a place that's great for bird-watching. And don't leave town without a visit to the Aquarium of Niagara to see the penguins (企鹅)!

    Make a Splash

    Buffalo is surrounded by water and plenty of chances to make a splash. Head to Canalside and ride on a water bike or take a sunset tour on the Miss Buffalo II. Have fun in the water park at Fantasy Island or jump on a Whirlpool Jet Boat or a Niagara Jet Adventure tour for a wild ride on the Niagara River. Welcome to our water world.

    Hands-On Experiences

    Throw the textbooks aside and introduce your little explorers to hands-on experiences. Raise a future paleontologist (古生物学者) with a visit to Penn Dixie where the kids can dig for fossils (化石). Head to East Aurora where learning feels like play at Explore & More Children's Museum.

    Make History

    There's plenty to inspire the imagination of the history lovers in your family on a trip to Buffalo. Appreciate art at the Herschell Carrousel Factory Museum. Pick up a souvenir at the Kazoo Factory Museum or experience life in the 19^th century at the Buffalo Niagara Heritage Village. It's time to make history in Buffalo!