A mother's love

    I'm a New York City firefighter. Every day, I see terror— sometimes even death. But the day I found Scarlett was different. That day I saw life. And love.

    We were responding to a call about a burning garage. Outside, I heard the sound of cats crying. I couldn't stop — I would have to look for the cats after the fire was put out.

    It took a long time to finally bring the big fire under control, but we did it. No one inside was hurt.

    At that point I was free to investigate the cat noises. There was still a lot of smoke and heat coming from the building. I followed the meowing(猫叫) to a spot on the sidewalk near the front of the garage. There, crying and huddled(挤作一团) together, were five terrified kittens. They must have been inside the building, as their fur was badly singed(烫烧).

    I left the five kittens in a box on a neighbor's porch(门廊).

    I wanted to find the mother. It was obvious that she had gone into the burning garage and carried out all of her babies, one by one —unbelievable.

    We finally found her. She was badly burnt: her eyes were blistered (起水泡), her paws(爪子) were blackened, and her fur was singed all over. You could even see her reddened skin beneath the burned fur. She could barely move. I picked her up, and she relaxed in my arms as much as her pain would allow. Sensing her trust, I shed a tear. I was determined to save this brave little cat and her family.

    The vet told me they would observe the kittens and their mother overnight, but they weren't optimistic about the mother's changes.

    About a week later, I found out she was going to live. One of the technicians suggested we name her Scarlett, because of her reddened skin.

    Knowing what Scarlett endured(忍受) for her kittens, it melted my heart to see her reunited with them. She touched each of them again, nose to nose, to make sure they were all safe. She had risked her life five separate times — and it had paid off. All of her babies had survived.

    As a firefighter, I see heroism(英雄事迹) every day. But what Scarlett showed me that day was the kind of bravery that can only come from a mother's love.

    A spaceship is flying to the sun in summer 2018! It will be the first-ever to a star and will be one of the biggest achievements space exploration (探险) in human history. The purpose is to study the sun's outer atmosphere and better understand how stars work.

The spaceship, with no man inside, will fly within 4 million miles of the sun's surface - right into the solar atmosphere, where the temperature is over 4,500℃. To protect the spaceship, it is covered with a 12cm-thick coating.

    The spaceship is called Parker Solar Probe and it is named after Eugene Parker, a professor from the University of Chicago. It's the first NASA spaceship to be named after a researcher who is still alive. In 1958, Eugene Parker first created the term “solar wind”-the sun sending out a flow of particles (颗粒) and energy.

    “The spaceship is going where it has never been before. It's very exciting that we'll finally get to know more about the solar wind. I'm sure there will be some surprises. There always are,” said Professor Parker.

    Parker calls it a heroic scientific space adventure, and he means that the spaceship will have to experience high temperatures and sun radiation (辐射). “The spaceship is going to do the hottest and fastest work. I love to call it the coolest hottest work under the sun,” said Scientist Fox Nasa.

    Sitting on the sofa in her family's Michigan home in 2009, looking through the Guinness World Records, 10 year-old Winter Vinecki was surprised to find that the record for the youngest person to complete a marathon on every continent was held by a 27-year-old man. “I can beat that,” she declared. “For Dad. ” And she had every reason to believe she could.

    A natural athlete since the age of 5, Winter had been running together with her mom and uncle, both athletes, and competing in races across the country. Soon, her name was appearing in national competitions. Trophies (奖牌) lined her walls.

    But in 2008, at the age of 9, Winter stopped racing for medals. In May of that year, her father found out he had caught a rare cancer. To raise awareness and funds to fight the disease. Winter started an organization called I earn Winter. Just 10 months after his diagnosis, her father passed away.

    Over the next three years, Winter came first in 20 of the 37 races in which she competed, including four Junior Olympics Cross Country Championships. Along the way, she raised over $ 400,000 to help find a cure for cancer.

    Now 14, Winter is working on her world record to win her cause a place in the Guinness World Records. She recently completed her first marathon in Eugene, Oregon, a race normally limited to runners over 16, finishing in an amazing 3:45:04. “I'm used to racing with adults, and I think it's kind of fun to race past them,” said Winter before the race.

    With six continents to go, Winter has just begun a journey that will take her two years. “Every time I step to a starting line,” Winter says, “I have one thought in mind: keeping my dad's spirit alive.”

    The city of San Francisco is a wonderful tourist attraction that offers many different things to see and do. The best way for a traveler to get a good look at the city is to take one of the many different tours there

    Walk to Tour the City

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    Hit the Waters of San Francisco Bay

    The waters of San Francisco Bay have played an important role in the city's development over the last century. Touring San Francisco from the water is completely unique way for you to see this wonderful city.

    Take a Bus Tour

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    Tour San Francisco From the Air

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    Teenagers who talk on the cell phone a lot, and hold their phones up to their right ears, score worse on one type of memory test. That's the finding of a new study. That memory impairment might be one side effect of the radiation (放射线) that phones use to keep us connected while we're on the go.

    Nearly 700 Swiss teens took part in a test of figural memory. This type helps us remember abstract (抽象的) symbols and shapes, explains Milena Foerster. The teens took memory tests twice, one year apart. Each time, they had one minute to remember 13 pairs of abstract shapes. Then they were shown one item from each pair and asked to match it with one of the five choices. The study volunteers also took a test of verbal memory. That's the ability to remember words. The two memory tests are part of an intelligence test. The researchers also surveyed the teens on how they use cell phones. And they got call records from phone companies. The researchers used those records to figure out how long the teens were using their phones. This allowed the researchers to work out how big a radiation exposure (接触) each person could have got while talking.

    A phone user's exposure to the radiation can differ widely. Some teens talk on their phones more than others. People also hold their phones differently. If the phone is close to the ear, more radiation may enter the body, Foerster notes. Even the type of network signal that a phone uses can matter. Much of Switzerland was using an older "second-generation" type of cell phone networks, the study reports. Many phone carriers (通讯公司) have moved away from such networks. And more companies plan to update their networks within the next few years.

    The teens' scores in the figural memory tests were roughly the same from one year to the next. But those who normally held their phones near the right ears, and who were also exposed to higher levels of radiation, scored a little bit worse after a year. No group of teens showed big changes on the verbal memory test. Why might one type of memory be linked to cell phone use, but not another? Foerster thinks it could have to do with where different memory centers sit in the brain. The site that deals with the ability to remember shapes is near the right ear.

    Scientists in New Zealand have found fossilized (化石的) leg bones from a penguin believed to have been about the size of an adult human. The previously undiscovered giant penguin species likely stood about 1.6 meters tall and weighed up to 80 kilograms.

    The penguin existed about 60 million years ago. The bones are believed to be from the oldest of several species of giant penguins that lived after dinosaurs died out. A fossil hunter found the bones last year in the Waipara River bed near the city of Christchurch. The bones are from the animal's legs and feet. Scientists confirmed that the bones came from a newly discovered species.

    Paul Scofield is senior curator (馆长) at New Zealand's Canterbury Museum. He co-wrote a paper on the discovery. He said that the bones are an important find. They show that the species is similar to another giant penguin found in Antarctica in 2000. The latest discovery, he said, helps show a clear connection between the two areas during the Paleocene period. This period lasted from 66 million to 56 million years ago.

    Scofield said the penguins were able to grow larger after entering a new development period following the extinction of dinosaurs, sea reptiles and huge fish. Scofield added that the giant penguins became extinct within 30 million years, as large mammals began to rule the waters.

    John Cockrem is a penguin expert at the country's Massey University who was also not involved in the research. He said the discovery helps add to what we know about giant penguins. He said it also confirmed New Zealand as the penguin center of the world.

    New Zealand is believed to have been home to many giant bird species that later disappeared. These included the world's largest parrot, a giant eagle and an emu-like bird called the moa. Recently, Canterbury Museum announced the discovery of an unusually large parrot believed to have lived about 19 million years ago. Scientists say the bird stood about one meter tall.