The death of the plastic credit card could be a step closer as high street names including McDonald's and the Co-op prepare to test a breakthrough finger-scanning payment technology.

    FingoPay, developed by British start-up Sthaler, uses a biometric reader to scan the veins of a shopper's finger, building up a “map” that is unique to each individual.

    By connecting this pattern with a credit card or bank account, the company plans to let shoppers pay simply by placing their finger in a pocket-sized scanner, doing away with cash and credit cards.

    Sthaler, founded by former music industry executive Nick Dryden, will begin testing the technology next month in Proud, a London nightclub. Mr. Dryden said McDonald's is experimenting with a pilot of the technology, and that Sthaler is also planning a project with Co-op's food stores.

    It comes amid growing interest in using biometric identification in payments, which backers believe are more secure and efficient than passwords and PINs. Apple Pay, which uses the iPhone's fingerprint technology, launched in the UK in 2015 and was followed by the Android equivalent in May 2016.

    Hendrik Kleinsmiede, the director of Visa Europe's innovation arm Collab, which is backing Sthaler, said the Fingopay technology was less immune to problems such as wet and dusty fingers or fraud. “People are ready to accept biometrics as a secure authentication mechanism,” he said.

    Sthaler says the chance that two people have the same vein structure is 3.4bn-to-one, making it virtually impossible to crack. The vein scanner, developed by Hitachi, is already being used by Barclays to identify business customers as well as in cash machines in Japan, but Sthaler has the unique rights to license it to retailers.

    In the trial at Proud set to begin in September, the technology will be used to speed up waiting times at the bar both by cutting down on cards and by being able to suggest drinks based on what a patron has previously ordered.

    On February 6, Space X, a private US aerospace company owned by Elon Musk, has successfully launched its new Falcon Heavy spacecraft, making it the world's most powerful rocket.

    Falcon Heavy is the largest rocket since the retirement of NASA's Saturn V, which was used for the Moon missions in the 1970s. “Falcon Heavy can launch about 64 tonnes into low Earth orbit-that's almost three times more than the current running biggest launch vehicle, Delta IV Heavy, ”Imperial College astrophysicist David Clements told AI Jazeera. According to Space X, Falcon Heavy can lift into orbit a mass greater than a 737 jet loaded with passengers, crew, luggage and fuel.

    The rocket was designed with the idea of earning humans into space and opening the possibility of flying missions with people to the Moon and even Mars. For its first voyage, it carried Musk's $ 100,000 cherry-red Tesla sports car and a fake space-suited human model fixed in the driver's seat. Musk joked that “it may be discovered by some future alien race”.

    Falcon Heavy went into space on its last flight on February 6. The launch took place at NASA's Cape Canaveral Air Force Station and Kennedy Space Center in the US state of Florida, the spot also used for the Apollo 11 Moon mission and several space shuttle launches. It was delayed by several hours because of high winds in the upper atmosphere. Minutes after take-off, the two outer boosters (助推器) landed at the nearby Cape Canaveral Air Force Station.

    Space X announced plans to eventually use Falcon Heavy to launch two paying space tourists on a trip around the Moon. However, Musk said he will probably reserve that mission for another launch system, the BFR. Recently, Space X scheduled to launch a Falcon 9 rocket for NASA's TESS mission on March 20, 2018. It is reported that Space X is scheduled to complete 30 independent launch missions in 2018, at least half of which will use Falcon 9.

    Families should reduce exposure to synthetic chemicals found in food colorings, preservatives and packaging materials as a growing body of research shows they may harm children's health, according to a policy statement and technical report from the American Academy of Pediastrics released online.

    The statement also suggests improvements to the food additives regulatory system, including updating the scientific foundation of the U.S. Food and Drug Administrations safety assessment retesting all previously approved chemicals.

    Leonard Trasande, the author of the policy statement, to tell us more about these concerns.

Q: What are the growing number of studies showing us?

A: Over the past two decades, an accumulating body of science suggests some food additives can interfere with a child's hormones, growth and development.

    Potentially harmful effects of food additives are of special concern for children because they are more sensitive to chemical exposures because they eat and drink more relative to body weight, than adults do and are still growing and developing. An early injury to their organ systems can have lifelong and permanent consequences.

Q: What additives does the statement highlight?

A: The additives of most concern, based on rising research evidence cited in the report, include:

    Bisphenols, such as BPA, used to harden plastic containers and line metal cans, can act like estrogen（雌激素）in the body which may potentially change the timing of puberty, decrease fertility, increase body fat and affect the nervous and immune systems. BPA is now banned in baby bottles.

    Phthalates, which make plastic and vinyl tubes used in industrial food production flexible, may affect male genital development increase childhood obesity and contribute to cardiovascular disease. In 2017, the Consumer Product Safety Commission banned the use or some phthalates in child-care products such as teething rings.

    Homestay in Sydney, Australia

    Linda:

    Our big home is in Sydney, about 300 meters from Sydney University and 450 meters from the train station. The train ride is about 30 minutes to the CBD. Now we only have a small bedroom for a female student.

    The cost is $260 per week, which includes all meals when at home and laundering(洗烫) of clothes.

    E-mail: markalarms @optusnet. com.au

    John:

    I have a lovely single room for homestay (male, non-smokers only). The apartment is located across the road from a bus station. A sports field is only a two-minute walk away.

    The room is for both short and long stays. The cost is $220 per week, including breakfast and lunch on weekdays. There is no washing machine at home. Do your own laundry in the apartment block's facilities.

    E-mail: ainsley gilkes@yahoo.com.au

    Eric:

    I live in the northern suburbs of Sydney--quiet for studying and relaxing, yet close to Sydney University & NCELTR & SIBT. The subway station is nearby.

    All facilities of the house including a living room with a TV can be used. Owners are very open and friendly, and treat students as part of the family.

    The prices include all meals (breakfast, lunch and dinner) and cleaning. The fee is $300 per week. E-mail: mineanny@hotmail.com

Rose:

    Hi, everyone! I have one room for homestay (girl students only) in a house which is very close to Sydney University (SIBT) & WSU in the northern district of Sydney. There is a bus station across the road. Travel time to the centre of the city is 40 minutes by train. We only have one homestay at a time. Therefore, our family can take good care of you. The fee is $230 per week. We are looking forward to having you in our home.

    E-mail: cliqi9239@hotmail com

    The market for products designed specifically for older adults could reach $30 billion by next year, and startups (初创公司) want in on the action. What they sometimes lack is feedback from the people who they hope will use their products. So Brookdale, the country's largest owner of retirement communication, has been inviting a few select entrepreneurs just to move in for a few days, show off their products and hear what the residents have to say.

    That's what brought Dayle Rodriguez, 28, all the way from England to the dining room of Brookdale South Bay in Torrance, California. Rodriguez is the community and marketing manager for a company called Sentab. The startup's product, Sentab TV, enables older adults who may not be comfortable with computers to access email, video chat and social media using just their televisions and a remote control.

    "It's nothing new, it's nothing too complicated and it's natural because lots of people have TV remotes." says Rodriguez.

    But none of that is the topic of conversation in the Brookdale dining room. Instead, Rodriguez solicits residents' advice on what he should get on his cheeseburger and how he should spend the afternoon. Playing cards was on the agenda, as well as learning to play mahjong(麻将).

    Rodriguez says it's important that residents here don't feel like he's selling them something. "I've had more feedback in a passive approach." he says. "Playing pool, playing cards, having dinner, having lunch, all work better than going through a survey of questions. When they get to know me and to trust me, knowing for sure I'm not selling them something—there'll be more honest feedback from them."

    Rodriguez is just the seventh entrepreneur to move into one of Brookdale's 1,100 senior living communities. Other new products in the program have included a kind of full-body blow dryer and specially designed clothing that allows people with disabilities to dress and undress themselves.

    "First and foremost, the residents love it." says Smith. "It also provides Brookdale the opportunity to learn about and experience new technologies quickly and inexpensively and to make sure that we understand what residents want and need."

    Mary Lou Busch, 93, agreed to try the Sentab system. She tells Rodriguez that it might be good for someone, but not for her.

    "I have the computer and FaceTime, which I talk with my family on." she explains. She also has an iPad and a smart phone. "So I do pretty much everything I need to do."

    Rodriguez takes it pretty well.

    "I'm not going to lie to you, I would've liked a more positive response." he says. But "if people don't need it or want it, it's up to us to change, adapt it or make it more useful."

    To be fair, if Rodriguez had wanted feedback from some more technophobic (害怕技术的) seniors, he might have ended up in the wrong Brookdale community. This one is located in the heart of Southern California's aerospace corridor. Many residents have backgrounds in engineering, business and academic circles.

    But Rodriguez says he's still learning something important by moving into this Brookdale community: "People are more tech-skilled than we thought."

    And besides, where else would he learn to play mahjong?

    Do you have a talented young artist, photographer, or designer in your life? It's never too early to start helping them get their work out there! We've rounded up the top art contests for kids and teens that can help these young creators share their first masterpieces with the world. Best of all? Most of them are totally free to enter!

    Global Canvas Art Competition

    Ages: 16 and under

    Mediums: Drawing, painting

    Global Canvas is all about the environment. Launched by the David Shepherd Wildlife Foundation, this art competition wants to inspire the next generation to be more mindful of how we take care of the earth. The judges are looking for artists to capture the wonderful places that wildlife call home.

    Toyota Dream Car Art Contest

    Ages: Four to 15

    Mediums: Drawing, painting

    Time to design a dream car! Toyota wants to get junior artists thinking about what the future of transportation might look like. Prizes include cash and a chance to tour one of the Toyota manufacturing plants.

    Advena World's art Competition

    Ages: 15 and under

    Mediums: Drawing, painting

    Advena World's art competition aims to promote creativity and self-expression. Instead of a theme, they ask the participating artists to simply express their feelings—anything from sadness or joy to anger or excitement—through their chosen medium,.

    Progressive Young Artist Awards

    Ages: 13 to 19

    Open to: All international applicants

    Mediums: Painting, drawing, photography, mixed media, sculpture

    Cost to enter: $5 USD

    PYAA is all about expressing and celebrating progressive values. So, if there is a creative teen in your life who wants to do good in the world, sign them up for this art contest for teens. The prize is a scholarship which they can put toward their post-secondary schooling.