“Plants were expected to get larger with increased carbon dioxide in atmosphere, but changes in temperature, humidity and nutrient availability seem to trumped the benefits of increased carbon dioxide,” said researchers from the National University of Singapore.

    45 percent of the species studied now reach smaller adult sizes than they did in the past. The researchers pointed out that warmer temperatures and changing habitats, caused by climate change, are possible reasons for shrinking creatures.

    “We do not yet know the mechanisms involved, or why some organism are getting smaller while others are unaffected,” the researchers said. “Until we understand more, we could be risking negative consequences that we can' t yet quantify.”

    The change was big in cold-blooded animals. Only two decades of warmer temperatures were enough to make reptiles smaller. An increase of 1 degree centigrade caused nearly a 10 percent increase in metabolism(新陈代谢). Greater use of energy resulted in tiny tortoises and little lizards. Fish are smaller now too. Though overfishing has played a part in reducing numbers, experiments show that warmer temperatures also stop fish growth. There is a recent report on warmer temperatures' negative effects on plankton, the base of the marine ecosystem.

    Warm-blooded animals weren't immune from the size change caused by climate change. Many birds are now smaller. Mammals have been miniaturized too. Soay sheep are thinner. Red deer are weaker. And polar bears are smaller, compared with historical records.

    This is not the first time this has happened in Earth' s history. 55 million years ago, a warming event similar to the current climate change caused bees, spiders and ants to shrink by 50 to 75 percent over several thousand years. That event happened over a long time than the current climate change.

    The speed of modem climate change could mean organisms may not respond or adapt quickly enough, especially those with long generation times. So, it is likely that more negative influences of climate change will be shown in future.

    Two of the saddest words in the English language are if only. I live my life with the goal of never having to say those words, because they convey regret, lost opportunities, mistakes, and disappointment.

    My father is famous in our family for saying, “Take the extra minute to do it right.” I always try to live by the “extra minute” rule. When my children were young and likely to cause accidents, I always thought about what I could do to avoid an “if only” moment, whether it was something minor like moving a cup full of hot coffee away from the edge of a counter, or something that required a little more work such as taping padding (衬垫) onto the sharp corners of a glass coffee table.

    I don't only avoid those “if only” moments when it comes to safety. It's equally important to avoid “if only” in our personal relationships. We all know people who lost a loved one and regretted that they had foregone an opportunity to say “I love you” or “I forgive you.” When my father announced he was going to the eye doctor across from my office on Good Friday, I told him that it was a holiday for my company and I wouldn't be here. But then I thought about the fact that he's 84 years old and I realized that I shouldn't give up an opportunity to see him. I called him and told him I had decided to go to work on my day off after all.

    I know there will still be occasions when I have to say if only about something, but my life is definitely better because of my policy of doing everything possible to avoid that eventuality. And even though it takes an extra minute to do something right, or it occasionally takes an hour or two in my busy schedule to make a personal connection, I know that I'm doing the right thing. I'm buying myself peace of mind and that's the best kind of insurance for my emotional well-being.

                                                     Four Books That Will Interest You to Travel the World

    There's truly nothing like travel when it comes to gaining life experience. To get you in the adventuring mood, we asked Amazon Senior Editor Chiris Schlep to help us come up with a list of books that transport readers to another time and place. Below, see his list of four books that will interest you to travel the world.

    SEATTLE: Where You'g Go, Bernadette? By Maria Sample

    Maria Sample's first novel is not exactly a love story to Seattle, but if you read it, you just might want to come here to see if people are really as self-involved as the characters in her book. What really shines through is the strange storytelling and the amusing incidents. Buy it on Amazon. price: $26.60.

    ENGLAND: Wolf Hall by Hilary Mantel

    You can't travel to Thomas Cromwell's England without a time machine, but reading Hilary Mantel's prize-winning novel is the next best thing. It will make you long to see the ancient buildings and green grass of the English countryside, much of which is still there. Buy it on Amazon. price$25.10.

    NANTUCKET: Here's to Us by Eli Hildebrand

    Eli Hildebrand has built a writing career out of writing about her hometown island of Nantucket. Her latest is Here's to Us, which, perhaps not surprisingly, is a great beach read. Buy it on Amazon. price: $30.80.

    ITALY: Beautiful Ruins by Jess Walter

    This book by the popular author Jess Walters is a love story that begins on the Italian Coast in the early 60s and eventually concludes in contemporary Hollywood. As the settings shift from Italy to Edinburgh to Los Angeles, you will find yourself longing to go as well. Buy it on Amazon.price:$28.90.

    Let's face it. No one drinks diet sodas for the taste. People drink diet sodas in the hope that it will help them lose weight or at least keep them from gaining it. Yet it seems to have exactly the opposite effect, according to a new study.

    Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn't drink diet sodas. "What we saw was that the more diet sodas a person drank, the more weight they were likely to gain," said Sharon Fowler.

    The study was based on data from 474 participants in a large, ongoing research project, where the participants were followed for nearly 10 years.

    While the findings are surprising, they also offer some explanations.

    Nutrition expert, Melanie Rogers, who works with overweight patients in New York, has found that when patients are switched from regular to diet sodas, they don't lose weight at all. "We weren't seeing weight loss necessarily, and that was confusing to us," said Rogers.

    So why would diet soda cause weight gain? No one knows for sure yet, but it could be that people think they can eat more if they drink diet sodas, and so over-compensate(补偿) for the missing calories.

    A related study found some sweeteners (甜味剂) raised blood sugar levels in some mice. "Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky," said Helen P. Hazuda, professor at the University of Texas's school of medicine. "They may be free of calories, but not of consequences."

    In the past five years, Instagram has taken off faster than anyone would have ever expected. It has become more than just a social media platform; it has become a community. With this community of over 800 million people, there are two distinct sides when it comes to diet culture and weight-loss programs. These two sides are body positivity and body manipulation(操纵）

    I have run a food and lifestyle blog/Instagram for over two years, and I have experienced both of these sides shown through Instagram. I have followed accounts (账户) that have been about strictly counting their calories, and have looked at other people carefully for their food habits

    On the other side of this, the only accounts that I'll follow now are people who support intuitive eating, never calorie counting, and make sure to remind people that their weight is the least interesting thing. They try to remind people that food is fuel, rather than something that will make them lose or gain weight. This side of

    Instagram is what helps people suffering from eating disorders, rather than fueling them.

    The rise of Instagram also led to the rise of what we called" Instagram models. These people have a lot of fans and a very pleasant page on Instagram. Basically, this isn't a bad thing. Humans are attracted to attractive people. Where this does go wrong is when weight-loss programs, weight-loss products, and other people supporting different types of diets get in touch with these people and offer them pay to get their message across.

    We also run into issues with how the public thinks of and admires these people for only their bodies. Not only is it bad for the self-respect of the people viewing the account, but also for the mental health of the person running the Instagram account.

    The people that promote these products are usually attractive, with what we would consider "the perfect body and the products are almost always diet related in some way, which makes consumers believe that in order to reach this ideal body they must use this product.

    As Simon Kindleysides, 34, took his first step in the London Marathon in April, he felt as if magic was in the air.

    "As we were walking toward the first mile, we actually started joining all the runners," he said. "Everyone was on the streets, cheering, and that was a magical moment." As time went on, the crowds and other racers spread around. Kindleysides and his team of eight supporters continued walking.

    Kindleysides, who is paralyzed(瘫痪的)from the waist down and typically uses a wheelchair, was equipped with an exoskeleton(体外骨骼)to help him walk. His supporters walked with him to change the batteries in his exoskeleton so he could keep moving.

    In 2013, Kindleysides was diagnosed with a brain tumor (肿瘤) that was growing in a way that pressed on certain nerves, leading to him losing feeling in his legs. He was told he would never walk again. Before his paralysis, the London­based singer and dancer had "always wanted to run a marathon," he said, but he never made the plan to do so­­until this year.

    During the London Marathon, the last two miles were the hardest. "At that point, I was exhausted. It was freezing cold, and I was hurting emotionally," Kindleysides said. But he kept going. "I didn't want to let people down. I had a team of eight, and I was raising money for The Brain Tumour Charity," he said. "I didn't want to let them down, myself down, and I thought if I would get this far, I would have to continue."So he continued and made history as the first paralyzed man to complete the London Marathon on foot.

    Then, recovering at home, he shared his accomplishment with his three children. "They used to say I'm the only dad in their whole school who's in a wheelchair, and now they say I'm their dad, the only one who has walked a marathon," he said.

    Kindleysides is training to complete three more marathons next year, including the London Marathon again.