One evening after dinner, Mr. and Mrs. Tisich called a family meeting. —We've had to make a difficult decision, Mr. Tisich announced. —You see, your mother has been offered a post as co-director of a television station in Chicago. Unfortunately, the station is not here. After thinking long and hard about it, we've concluded that the right decision is to move to Chicago.

    Marc looked shocked, while his sister Rachel breathlessly started asking when they'd be moving. —It's surprising, but exciting! she said. Marc simply said, —We can't go—I can't leave all my friends. I'd rather stay here and live with Tommy Lyons!

    The Tisichs hoped that by the time they moved in August, Marc would grow more used to the idea of leaving. However, he showed no signs of accepting the news, refusing to pack his belongings.

    When the morning of the move arrived, Marc was nowhere to be found. His parents called Tommy Lyon's house, but Mrs. Lyons said she hadn't seen Marc. Mrs. Tisich became increasingly concerned, while her husband felt angry with their son for behaving so irresponsibly.

    What they didn't know was that Marc had started walking over to Tommy's house, with a faint idea of hiding in Lyons's attic(阁楼) for a few days. But something happened on the way as Marc walked past all the familiar landscape of the neighborhood: the fence that he and his mother painted, the tree that he and his sister used to climb, and the park where he and his father often took evening walks together. How much would these mean without his family? Who make them special in the first place? Marc didn't take the time to answer that question but instead hurried back to his house, wondering if there were any moving cartons(纸板箱) the right size to hold his record collection.

    How do the world's only flying mammals communicate? Researchers have observed young bats adopting new “dialects” simply by hearing them repeatedly, making them one of the few animals known to have a capacity for vocal (声音的) learning. “These bats may help us clarify the evolution of speech acquisition (习得) skills,” says Yosef Prat, a PhD at Tel Aviv University (TAU).

    For one year, researchers raised 14 Egyptian fruit bat pups with their mothers in controlled area, exposing each young bat to two different vocalizations: the natural call of its mother and a separate recording that varied in pitch (音高) or frequency. They found that the pups in each group developed a dialect like the recording. “The general assumption in this field is that most animals develop their born vocalizations regardless of what they hear, and that human vocal learning abilities have developed during evolution,” says Mr Prat. “The finding that bats learn the common dialect in their rest place was unusual.”

    Scientists know little about the origin of spoken language, which is believed to have appeared in humans within the past 500,000 years. Dozens of theories attempt to explain the complexity of this skill, but none have done so conclusively.

    “Studying vocal communication and vocal learning in animal models is a very useful way to approach the problem,” says Olga Feher, an assistant professor at the University of Warwick in England.

    But animal vocalizations and human speech are very different things, says Jamin Pelkey, a professor at Ryerson University. “All species communicate. Unlike other animals, though, human beings are able to use sound patterns for functions that are far stranger—functions that are imaginative, theoretical, and critical. When speech is involved in these stranger functions, that is what we mean by spoken ‘language'.”

    The softshell turtle species is officially listed as endangered by the IUCN Red List. Scientists long thought softshell turtles were extinct in the Cambodian part of the Mekong River until they discovered some stragglers (掉队者) in the early 2000s.

    The species had quite a wide historical range across Asia, but much of that range is now completely gone. Much of the turtle's habitat in Southeast Asia have disappeared due to urban and industrial development along the Mekong River. The sand where turtles multiply is routinely carried away for use in construction projects, while fishing nets lift up hatchlings. People also take turtles and their eggs to sell for food.

    Initial surveys in 2003 and in 2007 found two small populations of the softshell turtles along a 30-mile stretch (水域) of the Mekong River. Since then, conservation groups have worked with local communities and officials to increase the wild population of these endangered turtles, including a program to hire former egg collectors to help search for and protect nests instead of harvesting the eggs.

    For the last decade, WCS, Conservation International, the Turtle Survival Alliance and local groups have worked to protect turtle nests. Their goal is to ensure eggs will multiply and hatch, and that baby turtles grow strong enough to eventually take care of themselves in the wild.

    A team recently released 150 hatchlings back into their natural habitat, bringing the total to more than 7,700 baby turtles in the past 10 years.

    Parents should stop blaming themselves because there's not a lot they can do about it. I mean the teenager problem, the one I want to talk about as a specialist. Whatever you do or however you choose to deal with it, at certain times a wonderful, reasonable and helpful child will turn into a terrible animal.

    I've seen friends deal with it in all kinds of different ways. One strict mother insisted that her son, right from a child, should stand up whenever anyone entered the room, open doors and shake hands like a gentleman. I saw him last week when I dropped in on them. Sprawling himself (懒散地躺) on the sofa in full length, he made no attempt to turn off the loud TV he was watching as I walked in, and his greeting was no more than a quick glance at me. His mother was ashamed. "I don't know what to do with him these days," she said. "He's forgotten all the manners we taught him."

    He hasn't forgotten them. He's just decided that he's not going to use them. She admitted that she would like to come up behind him and throw him down from the sofa onto the floor.

    Another good friend of mine let her two daughters climb all over the furniture, reach across the table, stare at me and say, "I don't like your dress; it's ugly." One of the daughters has recently been driven out of school. The other has left home.

    "Where did we go wrong?" her parents are now very sad. Probably nowhere much. At least, no more than the rest of that unfortunate race, parents.

    Nine years ago, a few days before Christmas, I was a director at a company in San Francisco, and I was called into a meeting that was already in progress. That meeting turned out to be my exit interview. I was 64 years old at the time. It wasn't completely unexpected. I signed a pile of papers and left the company.

    So, 40 plus years of employment was over. I had a good reputation and background. Retirement was not a choice for me. I wanted to do something. And then an idea came into my mind, born from my concern for our environment. I wanted to build my own business, designing and producing biodegradable(可生物降解的)packaging from waste. This is called clean technology, and it was really meaningful to me. It could help reduce billions of pounds of single-use plastic packaging wasted each year.

    Five years later, I'm delighted and proud to share with you that our income has doubled every year and we have no debt. Meanwhile, I have a wonderful partner, and we've won more than 20 awards for the work that we've done.

    And I am doing the most rewarding and meaningful work of my life right now. But what I really long for is to find other first-time entrepreneurs(企业家)who are my age. I want to connect with them.

    So I want to do something about that in a few years. I want us to start talking more about people who don't become entrepreneurs until they are seniors. And then connecting all of them across industries, regions and countries—building a community.

    "I will need to open your neck to remove the tumor," the surgeon told me on a hot summer day. The words turned into white noise. "So, an ugly scar across my neck, then?" I asked. The nurse said: "Don't worry. The closure is like his signature. Just like you want a perfect scar, he wants to give you one. You'll barely see it." I found some comfort in that.

    I googled "cancer surgery scar" and was presented with neck images: necks with red and purple lines, closed with stitches or glue; necks with multiple scars....It was enough to make me shut my Macbook, as anxiety pulsed through my body. In the mirror, I admired my neck, running my finger across a gold chain I wore. Then a tiny voice said:" Mummy!"

    My then fie-year-old son. Jack, appeared in the mirror behind me. Our reflection was a big reality check. See, my son didn't know I had cancer and was having surgery. I'm a single mom. Jack lives with me and doesn't have a relationship with his father. I'm his hero. I'm the homework helper, nurse, chef, taxi driver, and every other variation of parent. I knew I couldn't lose heart over cancer or some scar on my neck --I'm this kid's life!

    So I did the next best thing I could think of: I made an appointment to get my hair done a few days before the first surgery. My goal was simple: golden hair to frame my scar. If I couldn't hide it, I might as well show it off. I never had any intentions of hiding the scar. I didn't want my son to think my scar was something to be ashamed of. I'm his role model and I needed to set a good example. Bad things can happen, but it's how you deal with them that matters.

    The scar proves I faced my fear and won. If I got through that I can get through all the hardships, land on my feet and live boldly.