Humans have launched themselves into the outer space. They've landed on the moon. They've built habitable space stations that orbit the Earth. The next giant leap for mankind is to reach another planet – specifically, Mars.

    The problem is that it's no easy task. The planet is 586 times further away from the Earth than the moon, and it'll take around 180 to 220 days to reach Mars, depending on where each planet is in its orbit. Such long periods in space have suggested many potential health problems, including hormonal changes, skin conditions, and muscle and bone deterioration (损耗).

    Here's where some furry friends come in. A wide range of animals have been in space, from fruit flies and spiders to cats, and dogs. Such experiments began as far back as the late 1940s in first tests to see if living things could withstand the extreme g-force (重力) of a rocket launch.

    Mice continue to play a very important part in space experiments, mainly because the animals make excellent test subjects. They're small, which makes them inexpensive and easy to care for. In addition, their size and short life span make it possible to do the equivalent of several human years of tests in a much shorter time. Finally, because mice are mammals, they share many common characteristics with humans in terms of genetics, biology and behavior.

    Astromice have hit the headlines recently, as a team of scientists led by Betty Nusgens, professor of biology at the University of Liege in Belgium, found that the mice suffered a 15 percent thinning of their skin after 91 days aboard the International Space Station (ISS).

    This experiment was part of a wider NASA mission (任务) called the Mice Drawer System (MDS). The Italian Space Agency developed the facility, which allows six mice to be housed, monitored, and automatically fed and watered aboard the ISS, among which three survived during the mission.

    The mice have participated in 20 separate experiments, to study such effects as osteoporosis (骨质疏松症), anemia (贫血) and heart health.

    Results for the 20 experiments are coming in gradually. But it's clear that mice continue to play an important role in the ongoing quest to conquer the final frontier.

    From the loss of wildlife to rising sea levels, we're all well aware of the problems that climate change could cause.

    But while it may seem like such issues won't affect most of us directly，it looks like future generations could grow up without something that many of us now take for granted: chocolate.

    According to an essay published by the US National Oceanic and Atmospheric Administration, changes to the climate in the regions that produce cacao - the plant from which chocolate is produced - may mean that it will soon become extinct.

    Most of the world's cacao grows in countries close to the equator，with over half of it growing in the African nations of Ghana and Ivory Coast.

It's predicted that by 2050, climate change will have accelerated the rate at which temperatures in these countries rise, making it extremely difficult for cacao to grow there.

    The problem doesn't lie in increased heat, however，but in lower humidity (湿度)，as it's believed that rainfall will stay at the same level if the temperature rises.

    “In other words, as higher temperatures squeeze more water out of soil and plants, it's unlikely that rainfall will increase enough to offset the moisture (含水量) loss,” Michon Scott, the essay's author, wrote.

    To help fight this problem, researchers from Berkeley University in the US are working on changing the DNA of cacao plants to allow them to survive in dryer conditions by using gene editing technology, according to US News.

    In the meantime, US company Mars, one of the world's biggest manufacturers of chocolate products, announced in January that it would spend $1 billion to help reduce the effects of climate change.

    “This is a world issue, and it requires everyone to work together,” Mars spokesperson Barry Parkin told Business Insider.

    The message here is that if we all do our part, we may be able to prevent some of the worst impacts of climate change. Or if we're unlucky, chocolate will become a thing of the past.

    Children who do better than their companions at school tend to go on to enjoy better health as adults, research suggests. The study was based on a 30-year follow-up of more than 14.000 children born in Sweden in 1953.

    The Journal of Epidemiology and Community Health study found the least popular children had a nine times higher risk of heart disease. They were also more at risk of diabetes (糖尿病),drugs, alcohol and mental health problems.

    The degree of popularity, power and status enjoyed by each child, was evaluated when the children reached sixth grade in 1966 by asking them who they most preferred to work with at school. Individual children were classified into five status bands depending on how many nominations (提名) they have received.

    The leader researcher Ylva Almquist, from the Center for Health Equity Studies at the University of Stockholm, said children with a low status might lack social support and information, this will lead to a more negative self-image, which could lead to lower expectations and poor choices in life.

    "For example, children in lower peer status may adopt a more health-damaging lifestyle, including behaviors such as heavy smoking and drinking. These behaviors are known to be major risk for heart disease." she said.

    She said the study shows that schools should work to promote social equality in the classroom, and to improve children's self-image.

    Professor Alan Maryon-Davis, president of the UK Faculty of Public Health, said, "Children who feel undervalued or are bullied (欺凌) at school often grow up lacking self-confidence. They then seek comfort in overeating, smoking or drinking, and all too often find themselves in poor health. It is important to do whatever we can to help children and young people feel valued."

    Imagine you are opening your own company and want to hire a manager. You have two candidates and they are both capable and experienced, so who would you rather hire: Julia Watson or Shobha Bhattacharva? Chances are that you would prefer Watson, right? But why?

    "Easy names are evaluated as more familiar, less risky and less dangerous," Eryn Newman, a scientist at Victoria University of Wellington, New Zealand, told Scientific American. As a result, people with easier names are often assumed to be more trustworthy. This is what Newman and her teammates have found in their recent study.

    In the experiment, they picked 18 different foreign names, including difficult-to-pronounce ones like Yevgeni Dherzhinsky and easy names like Bodo Wallmeyer. They then attached each name with a statement such as "turtles are deaf" and "giraffes are the only mammals that cannot jump" and asked volunteers whether they thought the claims were true.

    The results showed that claims connected to easier names were more often ranked as believable than those attributed to difficult names, regardless of what the truth really was. In fact, previous studies have already found that our judgments about products can be affected by their names. For example, we tend to think of a food additive (添加剂) with an easier name as safer and a stock with an easier name as more lucrative (利润丰厚的)，according to Medical Daily.

    But researchers pointed out that this effect can change depending on where someone comes from. For example, a native British man may find "Yevgeni Dherzhinsky" hard to pronounce while Russian people could say it without effort. Newman hopes that this finding can make us better see our biases (偏见). It's not just unfair to people that we make judgments based on gut feelings (直觉) rather than facts, and it can sometimes have serious consequences.

    For example, we may choose to believe certain eyewitnesses in court simply because their names sound more trustworthy even if they are actually lying. Or, we may let go of qualified job candidates due to their "difficult" names.

    Now, if you could make that decision again, would you still prefer Julia Watson to Shobha Bhattacharva?

Pack the car and explore what New York State has to offer. Here are four family-friendly destinations where you and the kids can play, learn and have endless amounts of fun.

Sullivan Catskills

This year-round water park features 11 attractions, including an activity pool, a rope bridge challenge and slides. The room is kept at 84 degrees, which prevents any outside Cats-kill cold. It opens from Thursday to Sunday.

Bethel Woods Center for the Arts

It's a nonprofit organization located at the historic 1969 Woodstock Music Festival site. Guests are welcome to explore the preserved site that held the famous festival. The center also has a museum that features artifacts from Woodstock.

Thomas Cole National Historic Site

The site has been additionally fitted with digital storytelling equipment intended to engage people of all ages, and while original artworks are on display, there are also things to touch and explore.

Vidbel Mountain Homestead

This fifth-generation nonprofit farm cares for several animals, many of which are rescued. The farm works to teach children to care for the resident horses, goats, pigs and dogs. This season, the farm is open to anyone who would like to see the animals, with a special focus on child and adult visitors with special needs or dealing with illness. No admission fee.

The Feynman Technique(费曼学习法)is a powerful method that you can use to learn anything faster because it forces you to actively think about the problem instead of passively reading or listening to someone else talk about it. You can take the following five simple steps to study better.

·Find out the topic you want to learn. {#blank#}1{#/blank#} Otherwise, you'll end up jumping between topics without developing a deeper understanding of any of them.

·Explain the topic as if teaching a sixth-grader. This step is the heart of the FeynmanTechnique—{#blank#}2{#/blank#}.This requires you to meet the child at their level of understanding by using the simplest way.

.Identify areas of improvement in your explanation. You'll need to critically(批判性地)review the explanation you cane up with in Step Two {#blank#}3{#/blank#}. Try to find any knowledge gaps, together with any areas where you felt that you couldn't explain the topic simply.

·Improve and optimiez(优化) your explanation. Think about all the knowledge gaps and otherareas of improvement you found before. {#blank#}4{#/blank#}

· Repeat the steps until you've achieved mastery of the topic. Keep going through each step you're fully satisfied with your explanation.{#blank#}5{#/blank#}, and that is why going through all the prior snnjust once is usually not enough to achieve topic mastery.

A. Use those to improve your explanation

B. To do so, take a critical look at your explanation

C. Make sure that your explanation is interest-based

D. Your explanations need to be short and to the point

E. The Feynman Technique works best with a repeat

F. It's important that you clearly know the topics you're trying to learn

G. Explaining the topic simply enough to be understood by a sixth-grade student