Why do some people live to be older than others? You know the standard explanations: keeping a moderate diet, engaging in regular exercise, etc. But what effect does your personality have on your longevity（长寿）? Do some kinds of personalities lead to longer lives? A new study in the Journal of the American Geriatrics Society looked at this question by examining the personality characteristics of 246 children of people who had lived to be at least 100.

    The study shows that those living the longest are more outgoing, more active and less neurotic (神经质的) than other people. Long-living women are also more likely to be sympathetic and cooperative than women with a normal life span. These findings are in agreement with what you would expect from the evolutionary theory: those who like to make friends and help others can gather enough resources to make it through tough times. Interestingly, however, other characteristics that you might consider advantageous had no impact on whether study participants were likely to live longer. Those who were more self-disciplined, for instance, were no more likely to live to be very old. Also, being open to new ideas had no relationship to long life, which might explain all those bad-tempered old people who are fixed in their ways.

    Whether you can successfully change your personality as an adult is the subject of a longstanding psychological debate. But the new paper suggests that if you want long life, you should strive to be as outgoing as possible.

    Unfortunately, another recent study shows that your mother's personality may also help determine your longevity. That study looked at nearly 28,000 Norwegian mothers and found that those moms who were more anxious, depressed and angry were more likely to feed their kids unhealthy diets. Patterns of childhood eating can be hard to break when we're adults, which may mean that kids of depressed moms end up dying younger. Personality isn't destiny, and everyone knows that individuals can learn to change. But both studies show that long life isn't just a matter of your physical health but of your mental health.

    In the middle of the 19th century，a fever dream of riches beyond measure drew countless explorers west to the mountains of central California. Although the gold rush ended up being a bust for many who sought a fortune，some of those explorers discovered a natural treasure that would draw permanent settlers to Yosemite Valley in the following decade.

    Vast wilderness，beautiful mountains，countless waterfalls，and abundant wildlife drew Native Americans to Yosemite roughly 10，000 years ago. The first non-native tourists arrived in the mid-1850s after reports from gold seekers told of an area of breathtaking beauty that no words were able to describe.

    Fortunately，some of Yosemite's earliest settlers recognized that Yosemite's natural beauty and resources needed to be preserved for future generations. In the midst of the Civil War，President Abraham Lincoln signed a grant to protect Yosemite permanently，thus making it the nation's first land to be dedicated to recreation and setting the stage for what would become the national park system.

    One of Yosemite's earliest ambassadors was Scottish-American naturalist and writer John Muir. After living in Yosemite for a few years，he helped define its proposed boundaries. He also wrote articles that helped lead to its official title as a National Park in 1890.He later co-founded the Sierra Club in 1892 to advocate for its continued preservation and protection.

    Located on the western slope of the Sierra Nevada mountain range in central California，Yosemite National Park runs across nearly 748，000 acres，almost 95％of which is wilderness. Around four million visitors come to Yosemite each year to camp，hike its miles of trails，climb its rock formations，and photograph its impressive sights. Are you ready to visit Yosemite National Park? Which of Yosemite's sights would you most like to experience?

    People in developed countries are increasingly suffering from illnesses resulting from overeating. While starvation and hunger are still big problems in many poor countries in the world, more than 25 percent of the population in America and other western countries are obese. This doesn't just mean you are a little bit fat. It means you are more than 20 kilos overweight.

    Dr. John Colon from Ohio State University says the problem is only going to get worse.” As more women have gone out to work, you find that parents in general have less time to spend on preparing food. That's not just cooking, but also planning what to eat, doing the shopping and buying the fresh food. Families, therefore, increasingly rely on ready-made and frozen meals, which tends to be high in fat and contain a lot of additives(materials added to food to improve its taste) and sugar. The other thing is that parents seem to feel guilty about not spending so much time with their kids, so they tend to give more quickly to children's demands for things like sweets and chocolate.”

    Ben Brown. Who is a British Member of Parliament, blames the big food companies. He wants to ban any food advertising that is aimed at children. "The problem is that these companies spend millions of pounds selling food to children. It's all crisps (薯片) in the shape of dinosaurs and chocolate in the shape of Mickey Mouse. I meanwhat's going to be more fun to an sight-year-old —an ice cream with a free toy or an apple?"

    One food company thinks it has an answer to this: it has invented cheese-flavored cabbage and chocolate-flavored carrots. It developed the "Whacky Veg" with money donated by a cancer research charity, which found that a diet containing lots of fruit and vegetables helps reduce cancer. However, today's sweet-toothed kids need to be bribed(贿赂)into a healthy diet, and will only cat their greens if they taste different.

    Everything about nuclear energy seems terrifically big: the cost, construction and decommissioning—and the fears of something going badly wrong.

    The future, however may well be much smaller. Dozens of companies are working on a new generation of reactors that, they promise, can deliver nuclear power at lower cost and reduced risk.

    These small-scale plants will on average generate between 50MW and 300MW of power compared with the 1,000MW-plus from a conventional reactor. They will draw on modular manufacturing techniques that will reduce construction risk, which has plagued larger-scale projects. Supporters believe these advanced modular reactors (AMRs)—most of which will not be commercial until the 2030s—are critical if atomic power is to compete against the rapidly falling costs of solar and wind.

    "The physics hasn't changed. It's about much cleverer design that offers much-needed flexibility in terms of operation," said Tim Stone, long-term industry adviser and chairman of Nuclear risk Insurers, which insures nuclear sites in the UK.

    Since the Fukushima meltdown in Japan in 2011, safety fears have threatened nuclear power. But the biggest obstacle today is economic. In western Europe, just three plants are under construction: in the UK at Hinkley point in Somerset; at Flamanville in France; and at Olkiluoto in Finland. All involve the European Pressurized Reactor technology of EDF that will be used at Hinkley Point. All are running years late and over budget. In the US, the first two nuclear projects under way for the past 30 years are also blowing through cost estimates.

    The UK, which opened the world's first commercial nuclear reactor in 1956, is one of the few western nations committed to renewing its ageing fleet to ensure energy security and meet tough carbon reduction targets. It is seen as a proving ground, by many in the industry, of nuclear power's ability to restore confidence.

    However, the country's agreement with EDF to build two units at Hinkley Point—which together will generate 3.2GW of electricity—has come under severe criticism over its cost. The government is looking at different funding models but said it still sees nuclear power as vital to the country's future energy mix. Small reactors, it believes, have the potential to generate much-needed power from the 2030s.

    A nuclear sector deal, unveiled last month, promised up to ￡56m in funding for research and development into AMRs and attracted interest of start-ups from around the world. The government hopes the funding will give the UK a lead in the global race to develop these technologies, helping to provide energy security while also creating a multibillion-dollar export market for British engineering companies.

    Last week I did something that scared me. I stood in front of nearly 200 financial planners and I talked to them about why financial blogs are a good thing. I'm a confident writer. I've been doing this long enough that I know my strength and my limitations. I'm less confident as a speaker. I don't have time to pause to collect my thoughts. I'm not able to edit. I'm afraid of being trapped in a corner without being able to talk my way out. Basically, I'm scared to speak.

    It would be easy to simply refuse the chances that come my way. When somebody asks me to speak in front of a group, I could say "no". When radio and television stations call for an interview, I could say "no". But for the past two years, I've been following my own policy to say "yes" to new chances.

    To say "yes" is to live in fear. My goal is to continually improve myself to become better than I am today. One way to do that is to do the things that scare me, to take them on as challenges, and to learn from them—even if I fail.

    In mid-November, a local station asked me to appear on live television. "I realize it's short notice," the producer wrote, "but we'd love to have you on the show if you're available tonight." I was frightened. I thought about recent taped television interviews that I had hated. I was afraid of what might happen.

    But I also thought about the things that had gone right. I thought of how my speaking skills had improved over the past year. And then I thought of the book I was reading, a book that I had bought for $1.29 at the local store. The Magic of Thinking Big was a huge bestseller during the 1960s. Written by Dr. David Schwartz, a professor at Georgia State University, the book contains dozens of practical tips on how to take risks to achieve big goals. Schwartz argues that nobody will believe in you until you believe in yourself.

    So when the television producer asked if I wanted to appear on his show, I thought big. "Sure," I said. "I'll do it." I acted confidently, but on the inside I was frightened. What I needed was techniques to build up my confidence and to overcome my fear.

On August 1, 2023, new rules went into effect in the United States thạt make it against the law to sell most incandescent (白炽的) light bulbs.

Incandescent light bulbs have been common since the late 1800s. They use electricity to create light by heating a metal wire, which glows. Over 90% of the electricity used by the bulbs goes into making heat — not light.

Since 2005, countries around the world have been banning incandescent bulbs. That's what's happening in the US. The new rules don't actually make incandescent bulbs illegal. They just say that light bulbs that are sold must be able to create a certain amount of light (45 lumens) with a certain amount of energy (l watt). Most incandescent bulbs can only create about 15 lumen s with I watt.

These days, the best way to replace incandescent bulbs is with LED light bulbs. These bulbs can create about 75 lumens with 1 watt of electricity. And they can last 25 or more times longer than incandescent bulbs.

Though the rule just took effect at the beginning of August, it was first created in 2007. Since then, the rule has been delayed many times, usually for political reasons. In the early 2000s, LED bulbs cost more money than they do today, and weren't nearly as good. But in recent years, people have been switching over to LED lights, even without the rule. The lights have become more and more popular, since they use less energy and save people money by lasting longer.

The new rules will also help the environment. Over the next 30 years, LED bulbs are expected to help prevent a huge amount of pollution in the US — about as much as would be used by 28 million homes in one year. That will be an imperative step in tackling the climate crisis.