A couple of days ago, as the test results came out, my son and a group of his 13-year-old friends piled into the back seat of my car, ready for the last-day-of-school party at McDonald's. “Jack got a laptop for getting straight A's, and Laurie got a cell-phone,” one boy said. “Oh, yeah, and Sarah got an iPad, and she's only in third grade,” said another. “And how about Brian? He got $10 for each A.”

    I suddenly became concerned. These payoffs might get parents through grammar school, but what about high school and beyond? What would be left after the electric guitar, the cell-phone, and the DVD player?

    I saw the road ahead:As the homework load increased, my income would decrease.I saw my comfortable lifestyle disappear before my eyes — no more of those $5 bags of already-peeled organic carrots. No more organic anything!

    I started to feel surprised and nervous. Would every goal achieved by my two children fetch a reward? A high grade point average? A good class ranking? Would sports achievements be included in this reward system: soccer goals, touchdowns? What about the orchestra? Would first chair pay more than second? I'd be penniless by eighth-grade graduation.

    “We never paid anything for good grades,” said my neighbor across the street, whose son was recently accepted at MIT. “He just did it on his own. Maybe once in a while we went out for pizza, but that's about it.”

    Don't you just hate that? We're all running around looking for the MP3 player with the most updates, and she's spending a few dollars on pizza. She gets motivation; we get negotiation. And what about the primary grades? What do these students get? “When the teacher asked if anyone got rewards for good grades, everyone in my class raised their hands and said they got ice cream cones ,” said one third-grader.

    People with an impulsive personality refer to those who tend to do things without considering the possible dangers or problems first. According to a new study by researchers at the University of Georgia, such people may be more likely to have food addiction. The study found that people exhibiting impulsive behavior weren't necessarily overweight, but impulsiveness was related to a direct relationship with food, and therefore, less healthy weight.

    Food addiction has been compared to addictive drug use. Studies have linked the dopamine (多巴胺) release that occurs after tasting delicious food to the dopamine release that happens when people consume other addictive substances.

    Impulsive behavior involves several personality traits (特点). Two of these traits, known as negative urgency and lack of perseverance, were particularly associated with food addiction and high BMI (身体质量指数) during the study.

    Negative urgency is characterized by the tendency to behave impulsively when experiencing negative emotions. Some people might drink alcohol or take drugs. For others, it could mean eating to feel better. Lack of perseverance is when a person has a hard time finishing hard or boring tasks. People with a lack of perseverance might have difficulty attempting to change addictive eating behavior, which could also cause obesity.

    “Impulsiveness might be one reason why some people eat in an addictive way despite motivation to lose weight,” said Dr. Ashley Gearhardt, a clinical psychologist. He was involved in developing the Yale Food Addiction Scale in aid of those people. “We are theorizing that if food addiction is really a thing, then our measure, the Yale Food Addiction Scale, should be related to helping control impulsive action,” said Gearhardt.

    Clinical psychologist Dr. James MacKillop, whose lab was conducting the study, believes that therapies used to treat addictive drug behavior could help people who suffer from addictive eating habits.

    “Most of the programs for weight loss at this point focus on the most obvious things, which are clearly diet and exercise,” MacKillop said. “It seems that managing strong desires to eat would naturally fit in with the skills a person would need to eat healthily.”

    Home from the Navy, I started school at Greenville College in my hometown of Illinois. I'd been out of high school for four years, but my high school headmaster, Mr. Gardner, invited me to a Valentine's Day dance party at school. The thought of seeing my former teachers was exciting. So I agreed.

    When Friday came, I cleaned up, dressed up and drove to the high school gym. I chatted with my teachers and approached Mr. Gardner to thank him before leaving. Just then, the band started playing and a young girl stood up to sing. One look at and I was crazy—I had never seen such a beautiful girl!

    I asked Mr. Gardner who she was, and he answered, “That's Marilyn Riley, Cut Riley's daughter.” I was shocked to say the least. They lived just around the corner from me. I walked across the gym floor to introduce myself, “Hi, I'm Jack Joseph.”

    “I know who you are,” was her not-too-friendly response.

    “Would you like to dance?” I asked. “No! I'm working,” she shot back.

    “Can I call you next week for a movie date?” I asked. “No,” was her response.

    For the next month I phoned, trying to set up a date. She always had the same answer: No. then one rainy afternoon in March as I was driving home after basketball practice, I saw Marilyn, walking with no umbrella, no raincoat, no hat. I pulled alongside her and asked if she needed a ride, half expecting her to say no. instead, she stepped over the roadside and sat down on the seat next to me. It was only a few blocks to her house, but after pulling into her driveway we talked for 45minutes. It was magic from then on.

    A study showed that the experiences children have in their first few years are important. These experiences affect the development of the brain. When children receive more attention, they often have higher IQs. Babies receive information when they see, hear and feel things, which makes connections between different parts of the brain. There are a hundred trillion (万亿) connections in the brain of a three-year-old child.

    Researcher Judit Gervain tested how good newborns are at distinguishing different sound patterns. Her researchers produced images of the brains of babies as they heard different sound patterns. For example, one order was mu-ba-ba. This is the pattern "A-B-B". Another order was mu-ba-ge. This is the pattern "A-B-C". The images showed that the part of the brain responsible for speech was more active during the "A-B-B" pattern. This shows that babies can tell the difference between different patterns. They also were sensitive to where it occurred in the order.

    Gervain is excited by these findings because the order of sounds is the building block of words and grammar. "Position is key to language," she says. "If something is at the beginning or at the end, it makes a big difference: 'John caught the bear.' is very different from 'The bear caught John.' "

    Researchers led by scientist Patricia Kuhl have found that language delivered by televisions, audio books, the Internet, or smartphones－no matter how educational－doesn't appear to be enough for children's brain development. They carried out a study of nine-month-old American babies. They expected the first group who'd watched videos in Chinese to show the same kind of learning as the second group who were brought face-to-face with the same sounds. Instead they found a huge difference. The babies in the second group were able to distinguish between similar Chinese sounds as well as native listeners. But the other babies－regardless of whether they had watched the video or listened to the audio－learned nothing.

    Kinder Camp

    This is a week-long camp, Monday through Friday, for children from three years old to those entering first grade in the fall. Early childhood educators guide your child through activities including songs, games, stories and walks in the woods. Daily themes include dirt, furry animals, insects and more! Parents sign up to bring a snack (小吃).Choose from either morning or afternoon sessions, from June 9 to July 1& 2019.

    Kids Camp

    Children explore all day in the natural world. Art, music, cooperative games and hikes through the woods are some of the activities in this fun-filled week. Each grade level has its own camp program especially designed with the campers5 interests in mind.

    Camp takes place Monday through Friday, 9 am to 3 pm.

    Level 1 (completed 1st grade): July 28 to August 1, 2019.

    Level 2 (completed 2nd grade): August 4 to 8 2019.

    Level 3 (completed 3rd grade): August 11 to 15, 2019.

    Please note: children must bring their own lunches.

    Outdoor Expeditions

    Send your child on a traveling adventure. Teenagers will investigate the natural, cultural and historical facts that make their hometown a great city. Activities will include unique field trips and tours.

    Outdoor Expedition: from 9 am to 3 pm, August 11 to 15, 2019.

    Please note: children must bring their own lunches.

    Rainbow Camp

    Campers enjoy all kinds of activities including arts and crafts, music and singing, drama, active games, cooking and a host of special events that go with our theme weeks! Special guests are invited to the camp every week to entertain our campers and may include storytellers, musicians and magicians.

Week-long camps, June 14 to July 18.

    Campers must be at least 4 years old to take part.

    For more information, call Frick Environmental Center at (412) 422-6538.

Researchers believe they have found evidence for a hidden ocean on Mimas, one of Saturn's major moons. This makes Mimas a target for learning more about the origins of life in our solar system. 

Saturn has 146 moons orbiting it. The biggest is larger than the planet Mercury; the smallest is roughly the size of a sports field on the Earth. Mimas, which was first discovered in 1789, is one of the major moons and is about 250 miles wide. 

Experts used to think Mimas was mostly made out of solid ice and rock. In 2014, astronomers noticed its orbit around Saturn was moving unsteadily. A shaky orbit can be caused either by a core shaped like a rugby ball or a huge liquid ocean beneath the surface. At first, lots of astronomers argued against the suggestion that Mimas had an ocean because there is no sign of it on the surface. 

To investigate more thoroughly, researchers looked at images taken by Cassini, a NASA spacecraft sent to study Satun. The images showed that the moon's orbit around Saturn drifted by about six miles over 13 years. The team's calculations found that the only way Mimas could move in this way is if it had a hidden ocean under the surface. They think the ocean formed when the moon's core warmed up and melted some of the ice. 

Mimas is just one of many moons that scientists think could have oceans below the surface Ganymede, which orbits Jupiter and is the largest moon in the solar system, has more water in its ocean than all of the oceans on the Earth. Titan, another of Saturn's moons, is believed to have a salty ocean beneath the surface. 

Space agencies want to study these oceans because they might be home to living organisms. However, the ocean on Mimas might not be old enough for life to have emerged there yet. It took hundreds of millions of years for life to develop on the Earth and the ocean on Mimas is relatively young;it is less than 25 million years old.