Twelve years ago, Danny called me from a dark, damp subway station. “A baby!” he shouted. “Get down here, and flag down a police car or something.” By nature, Danny is a remarkably calm person, so when I felt his heart pounding through the phone line, I ran.

    When I got to the subway station, Danny was holding a light-brown-skinned baby, about a day old. The baby had been wrapped in an oversize black sweatshirt and left on the ground in a corner behind the gate.

    Three months later, Danny appeared in family court to give an account of finding the baby. Suddenly, the judge asked, “Would you be interested in adopting this baby?” The question stunned everyone in the courtroom, except Danny, who answered, simply, “Yes.”

    “But I know it's not that easy,” he said.

    “Well, it can be,” assured the judge before barking out orders to allow me to be a parent-to-be.

    My first reaction, when I heard, went something like: “Are you crazy? How could you say yes without consulting me?”

    In three years as a couple, we had never discussed adopting a child. I was an ambitious playwright working as a part-time word processor. Danny was a respected yet wildly underpaid social worker. We had a roommate, who slept in our living room, to help pay the rent.

    We knew how many challenges couples usually faced when they wanted to adopt. And while Danny had patience and selflessness, I didn't know how to change a diaper(尿布), let alone nurse a child. I didn't trust the system and was sure there would be obstacles. Also, I couldn't handle parenthood. So I promised myself I wouldn't get attached.

    The caretaker held him and then placed him in my arms. But when the baby stared up at me, with all the innocence and hope he represented, I, like Danny, was completely hooked.

    This is What a REAL Silver Dollar Looks Like

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    “We all know that exercise is good for us, but can you get the benefits without actually doing the exercise?” asks Michael Mosley.

    Having a hot bath or a sauna is a good way to soothe your limbs after exercise, but what happens if you do it instead of exercise? Dr. Steve Faulkner of Loughborough University asked me to take part in an experiment comparing the relative benefits of having a long, hot bath versus an hour of hard pedalling.

    For this study I join a group of volunteers who have all been fitted with monitors which continuously record blood sugar levels. Keeping your blood sugar levels within the normal range is an important measure of your “metabolic” fitness.

    The first part of the experiment is very relaxing, consisting of having a long, hot bath. While I sit in the bath, which they keep at 40℃, Steve closely monitors my core temperature. Once it has risen and stayed there, I am allowed out.

    A couple of hours after my bath I have a light meal. Since we want to see how having a hot bath compares with exercise we repeat the experiment.

    So what's the result?

    “One of the first things that we were looking at,” Steve says, “is the energy expenditure while you're in the bath and what we found was an 80% increase in energy expenditure just as a result of sitting in the bath for the course of an hour.”

    This is nothing like as many calories as cycling for an hour (which comes out at an average of 630 calories) but we do burn 140 calories, the equivalent of a brisk 30-minute walk.

    Inspired by a 9-year-old cyclist, Lauren Turner, who can only use one hand, a group of University of Guelph students has won an international award for their invention — a bike brake lever (刹车手柄) that pulls both the front brake and the back brake at the same time.

    Lauren Tuner was able to ride her bike, but not as confidently and quickly as her friends.

    "She couldn't use the front brake. She only used the back brake, but the front brake makes you stop twice as fast," says Micha Wallace, who, with Katie Bell, Anina Sakaguchi and Andrew Morries won second prize in the James Dyson Award for their single-handed bike brake lever.

    "Lauren Turner tried the device (装置) first and she used it all last summer. She had no problems. It helped her go faster because she felt more confident in her braking abilities. She felt safer." says Wallace.

    The invention was the fourth-year design project for the four students. They designed, tested and created a prototype (模型) within a four-month period.

    When Wallace heard about the James Dyson Award on the news, she and her co-inventors entered their project in the U. K. -based contest, which rewards students designers who create products that improve the way we live. The students collected the runner-up prize — £2,000 for them and £500 for their school.

    As well, they had a chance to meet James Dyson, a U.K. famous inventor. Praising the students for their invention, Dyson says the single-handed brake lever could improve safety for all cyclists. By using both brakes at once, you could prevent the possibility of flying over the handlebars and ending up with an injury.

    The students hope to sell it to a major company. It may be used in other devices that require two hands for operation.

    This past summer I went on a journey to Canada's Arctic with Students On Ice. When I left Calgary I wondered what I would find what I would learn and who I would meet. On the trip to Ottawa I was wrapped in a blanket of uncertainty and excitement. But when I first met the group of students, scientists and leaders, I knew that l didn't have anything to worry about. The group was amazingly receptive and I was soon part of a big family setting out on an amazing adventure—an adventure of a lifetime!

    When we reached the Arctic I saw a vast Land that appeared untouched and original. I was surprised by its great size and beauty and my senses were repeatedly shocked and amazed. I stood on the Kapitan Khlebnikov and saw twelve polar bears. They walked in search of seal holes, and patiently waited for a meal. I learned that polar bears are successful only one out of every twenty hunting attempts.

    However, I learned that the Arctic and its people are being threatened by pollution and global warming. I learned that pollutants are carried by ocean and air and have a bad effect on all Arctic people. I learned that global warming has put polar bears at risk because a warmer climate means that they have a shorter time to hunt seals on the ice.

    The trip was a feast (盛宴) for the senses. I have learned more about our environment, and particularly how alive and interesting the Arctic is and why it is so important to take care of it. I learned pollution, ignorance of individual and global problems need to be solved. The Arctic deserves to be preserved. My trip with Students On Ice has made me more determined to try to ensure that I do not leave harmful footprints on either Earth or its people.