Reflecting(回忆) on the past about those decisions or actions that can't be reversed(推翻) and being occupied with thoughts of “What if?” is no way to live. But there are a few things in life I'd probably do differently if I had the chance.

    I once majored in architecture — something I had been crazy about for as long as I could remember — and then I suddenly had a change of heart. I made an appointment with my adviser, and told him I was no longer certain I wanted to pursue a career in architecture.

    “Don't give up on your childhood dream!” “He's right,” I thought. “I should just stick it out and I shouldn't disappoint the little girl who once loved architecture.”

    It was awful. I was agonized, holding on to a childhood dream that had long since faded. When I talked with a friend about it a year later, he asked: “Right now, what do you want to do with your life?” That's when I came to the realization that dreams change over time and that you should give up the childhood dream if it's not what you want as an adult. Luckily, it wasn't too late. After some serious thought, I changed my major to journalism. It wasn't something I had always imagined myself pursuing — but at that moment,  it was what I wanted.

    We grow up, and sometimes our dreams change — and that's perfectly OK. You just need to ask yourself every once in a while, “Is this still what I want?” If the answer is no, move on and start chasing a new one.

    My favorite book, The Secret by Rhonda Byrne, talks about a formula called "SFF" which stands for "stopping finding faults". I used to be a critical person and tried to find faults. I guess I somehow inherited this character from my father. Actually, many good qualities of my father are worth admiring except this.

    My father is the person who constantly looks for mistakes in other people and he thinks no one is perfect in the world. His character created a negative atmosphere in my family. I was the same as my father, so I often felt angry, disappointed, depressed, and lonely in school.

    After I had read my favorite book I began to seek "good things" in other people. It has completely changed my life. Now I feel happier, I have more friends, I have more trust in people, and I realize everyone has their own strength! Another important lesson I got from this book is that I should always behave myself in a positive manner. Let's admit that we sometimes complain about our situation. That's not good. "Believe it or not, people don't like to listen to negative opinions."

    One more valuable lesson I got from the book is that I should be a good listener. When I was younger, I only wanted people to pay whole attention to my words so that I could show them how important I was. I was very proud and would show off my achievements in school without considering others' feeling. I had very few friends and most people considered me as an "arrogant" person. Now, I find it much easier to make friends after making some changes!

    The hemlock(铁杉) trees along the Wappinger Creek, New York, look healthy. However, scientist Gary Lovett says the white balls which provide protection for the bugs are created by a tiny insect. It's hard to believe the tiny bug could kill a tree. However, trees can end up with millions and millions of the pests. When there are that many, it ends up killing the tree.

    The bug from East Asia is slowly killing trees across the USA. The trouble-making bug is just one of many invasive(入侵的) pests that have slipped into the United States. They can hurt other living things in their new home.

    Many invasive pests arrive on wooden pallets(运货板) piled inside shipping containers. They support and separate goods, and keep them from sliding around. Invasive pests often tunnel into the pallets. How can we stop pests from riding on pallets? Lovett says new rules are needed. The companies that make pallets don't want more rules. Congress has added an amendment(修正案) in the 2018 Farm Bill to try and prevent this problem. However, Lovett is not hopeful it will make much of a difference. Pallets are checked by inspectors. Many are sprayed with bug-killing pesticide. "I believe in the system," said Brent McClendon, president of The National Wooden Pallet and Container Association. He also said shipping containers are checked very carefully.

    Still, each year 13 million containers are shipped to the U. S. Each is full of wooden pallets. Lovett says: "Inspectors can't possibly check everything. All it takes are a few bad pallets; we should get rid of wooden pallets." He believes pallets should be made of plastic or eco-composite wood. Eco-composite wood is a mix of wood fiber and plastic. Insects cannot hide into it. One problem is that these choices cost more. They may be worth the extra money, though. Invasive pests cost the U.S. $5 billion a year. Trees don't just die in forests. They also die in cities and our yards. Then, they need to be replaced. That costs money, too.

    If you're looking to fully experience Africa's breathtaking scenery, and have an eye for adventure, then there's only one place to be. Here, inside Africa picks four of the best hikes from across the continent.

    ⒈Kilimanjaro

    Make it to the top of Tanzania's 5,895-meter Kilimanjaro, and you'll be standing at Africa's highest point. The mountain is Africa's most-visited hiking destination, attracting tens of thousands of tourists and adventures every year.

    You don't have to a technical climber to climb Mount Kilimanjaro; you just need not be pretty physically fit. There are six routes to choose from difficulty, scenery and success. No special equipment

    ⒉Atlas mountains

    The High Atlas is an impressive mountainous range in central Morocco that hosts North Africa's highest peak. Mount Toubkal, at 4,165 meters. There's a variety of routes to follow during your climb but inexperienced climbers should note that the hike through the mountain's challenging zones is quite demanding.

    ⒊Mount Kenya

    A long-extinct volcano. Mount Kenya is Africa's second-highest peak, at 5,199 meters.

    Lying just south of the equator, the mountain's deep valleys and diverse wildlife will guarantee you wonderful scenery and a fantastic hiking experience.

    The climb, however, to the mountain's steep ice-capped peaks is quite challenging, making it the most technical, probably, in that East African area.

    ⒋Mount Meru

    Mount Meru may forever exist in the shadow of its neighbor, Kilimanjaro, but Tanzania's second-highest mountain (4,565 meters) has its own devotees.

    It's less known, but Mount Meru is for the true enthusiast who wants to experience what very few people actually do.

    Mount Meru is often used by mountaineers to accustom themselves before trying to conquer Kilimanjaro, or by those wanting a hike with the local Massai.

    The World's Best Hearing Aid Value Under $200, the Doctor's Choice for Advanced Hearing Aid Technology

    How can a hearing aid cost less than $200?

    When you buy a hearing aid, be sure to choose a pair that every bit of it is as good as one that sells for $2500 or more.

    Although great progress has been made in Advanced Hearing Aid Technology, those cost reductions or falls in prices have not passed on to you­Until Now.

    The MDHearingAid PRO has been carefully tested by leading ENT (Ear, Nose and Throat) physicians and audiologists (听力学家) who have totally agreed that the sound quality and output in many cases is better than more expensive hearing aids.

    Since Medicare and most private insurance do not cover hearing aids, ENT surgeon Dr. Cherukuri designed a game­changing solution without sacrificing the quality of components that you can actually afford.

    "I recommend them to my patients with hearing loss."

—Amy S.Audiologist Indiana

    "I have had this aid two days and all I can say is WOW!"

—Terrsa H.,Grove, NJ

    "It is so much better than the $3000 hearing aid I had been using for years."

—Robert C. South Bend

    The fact is, you don't need to pay high prices for a medical-grade FDA registered hearing aid, MDHearingAid PRO is a high performance hearing aid that works right out of the box with no time-consuming "adjustment" appointments. You can conveniently access a hearing specialist online or by phone­even after the sale. No other company provides such extensive support. Over 75000 satisfied customers agree. Now that you know, why pay more?

    Try it at home within our 45-Day Risk-Free Trail (免费试用).

    If you are not completely satisfied, simply return it within that time period and we will give back your money for a 100% of your purchase price.

    800-475-7618

    Use Code: DB91

    For a year supply of Free Batteries and Free Shipping

    GetMDHearingAid.com

Ida Nelson and her sister were relaxing and enjoying themselves in the sauna (桑拿室) when she heard a series of long low sounds from a small airplane circling the nearby airport.

It was 11:30 at night in the Alaskan village of Igiugig, population 70, and, as she told the reporter, "Any time a plane flies over that late, you know something is wrong."

Nelson and her sister leaped out of the sauna, ran to the window, and saw the problem: The airport's runway lights were out.

Nelson threw on some clothes, jumped into her ATV, and floored it to the airport, where she found a local pilot trying to turn on the lights manually.

"Normally, if you push the button 10 or 15 times, the lights will just light up," Nelson told KTOO out of Juneau. Not this time. Meanwhile, she and the pilot learned of the plane's urgent mission: It was a medevac (医疗救护直升机), there to transport a seriously ill local girl to the nearest hospital, 280 miles away in Anchorage.

Nelson had a plan. Driving her ATV to the end of the runway, she shone her headlights for the plane to follow. Great idea, but it wasn't enough. More light was needed, so a neighbor called nearly every home in the village—32 of them.

Within 20 minutes, 20 vehicles arrived at the airport, many of the drivers still in pajamas (睡衣). Following directions from the medevac pilot, the cars lined up on one side of the runway.

The medevac made its final approach and, guided by the headlights, landed safely. The young patient was loaded onto the aircraft, and the plane immediately took off again. Her illness was never publicly revealed, but she has since been released from the hospital.

In a world filled with uncertainty, the little community's positive activism was a big deal. Not so much for Nelson. As she told the reporter, in Igiugig, coming together "is kind of a normal deal."