C

    Every small child knows the panic of losing sight of its mother in the supermarket, and as these delightful pictures show, small whales obviously feel the same way.

    Taken by a British diver who was following the sperm whale(抹香鲸) calf, they show the minute the baby - who had lost track of its mum-found her again in the sea off the Azores.

    Soaring 30ft across the waves, the newborn slammed（猛力推）its body onto the water with joy after becoming separated from its family group in the chilly（寒冷的）waters.

    But the whale calf was doing more than just jumping for joy.

    British biologist and dive guide Justin Hart, 44, who took the pictures, says that young whales communicate with older ones in the ocean by creating a slamming sound which travels through the water to the ears of the adults deep below.

    By leaping out of the water and slamming its 12ft long body onto the surface of the sea up to 30 times, the baby whale is telling its relatives where it is so they can regroup.

    He said: “We had been following the sperm whale calf for most of the day. Sperm whales, of all the whales and dolphins, are the species that dive the deepest and for the longest time.”

“The calves have to follow what's going on below them from the surface as best they can probably listening to the echo location（回声定位）clicks of the adults.”

 “However, sometimes the adults re-surface far out of sight of the calf, and in this situation the whales often leap out of the water causing a large bang as their bodies hit the surface. In this way, the whale family could regroup.”

He added: “When I took the photo, two adults' females had just resurfaced and the calf quite literally began jumping for joy.”

    Mr. Hart captured the rare image four miles from the port of Lajes do Pico while he was working as a crewman on an underwater documentary with special license to film sperm whales in the area.

    Sperm whales live in nearly all the world's oceans in groups of about 15 to 20 animals and they practice communal(集体的) childcare. The calves do not have to follow their mother too closely as sperm whales can take milk from any milk-producing female in its social group.

    Most students, when asked about their best graduation(毕业) gift, would probably reply, “ A car”, or “Money for a house”. Cai Kaiyuan, 21, made a difference choice. As a graduation gift to himself, he decided to work as a volunteer teacher in a distant village in Tibet.

    Cai, a student at Huan Railway Professional Technology College, at first planned to cycle from Sichuan to Tibet. It turned out cycling on a plateau(高原) was quite difficult. And it has kept changing his opinion on life. Cai's hands even became painful while cycling up a 5008-meter-high mountain, where temperatures often dropped to 18 below zero. At night, the ice covered the road and he fell off his bike three times. Little oxygen made him feel sick and weak. “At the most serious moment, I felt that was on the line,” said Cai.

    However, he also gained something unexpected. At Ya' an, a city in Sichuan, he met a group of tourists who are also university students. A girl called Wu Ling told him that she planned to work as a in a primary school in Tibet after her journey. He was impressed by the idea as she looked weak.

    It was not until he reached a family-run hotel in Shigatse that Cai's spirits began to rise. The hotel manager's two daughters enjoyed talking with him. The kids asked about his experiences on his trip, and showed him the beautiful local lakes. “They told me that they always liked to talk to guests, as they wanted to improve their Mandarin,” he said, “Their parents and many locals can only speak Tibetan.”

    Cai was moved by the girls' story. Their situation is worse and the local people have little chance to learn Mandarin because the schools are short of teacher. “1 want to do something to improve the situation for kids like them,” said Cai. His parents finally gave their agreement and his teachers also supported him.

D

    We may think we're a culture that gets rid of our worn technology at the first sight of something shiny and new, but a new study shows that we keep using our old devices (装置) well after they go out of style. That's bad news for the environment – and our wallets – as these outdated devices consume much more energy than the newer ones that do the same things.

    To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each product throughout its life – from when its minerals are mined to when we stop using the device. This method provided a readout for how home energy use evolved since the early 1990s. Devices were grouped by generation. Desktop computers, basic mobile phones, and box-set TVs defined 1992. Digital cameras arrived on the scene in 1997. And MP3 players, smart phones, and LCD TVs entered homes in 2002, before tablets and e-readers showed up in 2007.

    As we accumulated more devices, however, we didn't throw out our old ones."The Living-room television is replaced and gets planted in the kid's room, and suddenly one day, you have a TV in every room of the house," said one researcher. The average number of electronic devices rose from four per household in 1992 to 13 in 2007. We're not just keeping these old devices-we continue to use them. According to the analysis of Babbitt's team, old desktop monitors and box TV's with cathode ray tubes are the worst devices with their energy consumption and contribution to greenhouse gas emissions(排放) more than doubling during the 1992 to 2007 window.

    So what's the solution(解决方案)?The team's data only went up to 2007, but the researchers also explored what would happen if consumers replaced old products with new electronics that serve more than one function, such as a tablet for word processing and TV viewing. They found that more on-demand entertainment viewing on tables instead of TVs and desktop computers could cut energy consumption by 44%.

    This March is a busy month in Shanghai. There's a lot to do. Here are the highlights.

Live Music - Late Night Jazz

    Enjoy real American jazz from Herbie Davis, the famous trumpet player. He's coming with his new 7-piece band, Herbie's Heroes.  Herbie is known to play well into the early hours, so don't expect to get much sleep. This is Herbie's third visit to Shanghai. The first two were sold out, so get your tickets quickly.

    PLACE: The Jazz Club DATES: 15-23 March PRICE: ￥80,120 TIME: 10:00p.m. till late! TEL: 6466-8736

Scottish dancing

    Take your partners and get ready to dance till you drop. Scottish dancing is fun and easy to learn. Instructors will demonstrate the dances. The live band, Gordon Stroppie and the Weefrees, are also excellent.

    PLACE: Jack Stein's DATES: every Monday PRICE: Y60 including one drink TIME: 7:00 - ~0:00 p.m. TEL: 6402-1877

Exhibitions - Shanghai Museum

    There are 120,000 pieces on show here. You can see the whole of Chinese history under one roof. It's always interesting to visit, but doubly so at the moment with the Egyptian Tombs exhibition. There are lots of mummies and more gold than you've ever seen before. Let us know if you see a mummy move!

    PLACE: Shanghai Museum PRICE: ￥30 (￥ 15 for students) TEL: 6888-6888 DATES: daily TIME: Monday - Friday 9:00a.m. - 5:00p.m., Weekends 9:00a.m. - 9:00p.m.

Dining - Sushi chef in town

    Sushi is getting really big in Shanghai. In Japan, it's become an art form. The most famous Sushi 'artist' is Yuki Kamura. She's also one of the few female chefs in Japan. She'll be at Sushi Scene all of this month.

    PLACE: Sushi Scene in the Shanghai Hotel DATES: all month PRICE: ￥200 TIME: lunch time TEL: 6690-3211

    For a full listing of events, see our website.

    You may have heard adults say they are uncomfortable in the morning without a cup of coffee. One reason they may feel that way is that coffee contains caffeine(咖啡因). Caffeine appears naturally in coffee, tea, and cocoa beans, which are used to make chocolate. But now food makers are adding it to many products, from potato chips to water.

    The US government is especially worried about the problem. That's why the Food and Drug Administration (FDA) is studying the health effects of caffeine on young people. Studies show that too much caffeine can make people nervous and unable to sleep. What's more, caffeine is habit- forming. Those who consume it regularly and stop suddenly may experience headaches and feel tired.

    One of the biggest concerns is the large amount of caffeine added to so-called energy drinks, like Red Bull. A 12-ounce can of cola has about 35 milligrams of caffeine. A similar serving of Red Bull contains more than three times that amount.

    The Institute of Medicine is also working on caffeine-safety measures. "Teenagers should not drink beverages that contain caffeine. They should be aware of caffeine's effects on health and on how the brain works. Take, for example, teenagers who consume caffeine to stay awake and study for a test. They will remember less of what they just studied," said Stallings, a member of the institute.

    Companies that make products with added caffeine claim they do not advertise them to kids. However, there is no law to stop children from buying them. So the FDA needs to set limits on caffeine, especially in energy drinks. As for added caffeine in foods, the government should just say no. If not, the amount of caffeine should be printed on food labels to remind consumers. The government must do that.

    Doctors say kids should avoid caffeine. If you need extra energy, try these natural boosters: eat right, exercise, and get plenty of sleep.

Things to Do in Atlanta

    Need a rundown of the top things to do this weekend? Here is what's on in Atlanta.

    In the Mood

    Date: May 22 through May 26, 2019

    Time: 2:00 p.m. ~ 5:30 p.m.

Phone: 770-916-2800

    If you love the music of the 1940s, then here's what you need to do this Sunday. Go to a 1940s musical show at Cobb Energy Performing Arts Center. The music of Glenn Miller has a distinctive sound. No need to ask me twice. Are you “In the mood”?

    Party With the Penguins (企鹅)

    Date: May 20 through May 25, 2019

    Time: 11:30 a.m. ~ 2:00 p.m.

Phone: 404-581-4000

Celebrate Penguin Awareness Day at Georgia Aquariums annual party with the penguins. The party will feature fun activities, including the chance to see an African penguin up close and learn how to help protect these endangered species.

    Callanwolde Arts Festival

    Date: May 21 to May 22, 2019

    Time: 10:30 a.m. ~ 5:30 p.m.

Phone: 404-872-5338

    Located at Callanwolde Fine Arts Center, this event is a festival for artists and by artists, letting them have a voice in the creation and operations of the festival. If you are of the artistic persuasion or enjoy a creative scene, don't miss out.

    Foollio's Hoodilly Storytime

    Date: May 21 through May 27, 2019

    Time: 1:00 p.m. ~ 4:30 p.m.

Phone: 404-523-3141

    We make up a brand-new story every week. Come and enjoy a new story each time at Dad's Garage Theater. Little ones will get to help provide key parts of the story and even add in their own jokes. Interactive and out-of-the-ordinary fun for kids and parents!