If you want to be happy, you must take responsibility and stop expecting things or people to make you happy. You are the source of your own happiness, so stop looking elsewhere. {#blank#}1{#/blank#}. Here are a few ways for you to follow:

    Be thankful to others. {#blank#}2{#/blank#} It is too easy to take those around us for granted. Show them the same consideration you would like shown to you.

    {#blank#}3{#/blank#} This goes beyond(超过) politeness; it is a form of giving. Treat everyone you meet as if they have a big sign on their chest saying “make me feel important.” If you do this you will discover a hidden source of joy.

    Perform acts of kindness. Don't wait to be asked, {#blank#}4{#/blank#} It doesn't need to be a big thing, hold the door for a stranger, or smile at anyone you make eye contact with. Look for chances to make others feel good.

    Make a decision to be happy. This is the most important step on the road to a happy life. {#blank#}5{#/blank#} You are the key to your own happiness, so go ahead, unlock it once and for all.

A. Respect other people.

B. Be polite to other people.

C. Instead of looking for happiness, start creating it.

D. You can change your feelings by acting the way you want to feel.

E. If you see a chance to do something nice for someone else, do it!

F. Simply make up your mind to be the happiest person you know, and you will be.

G. Be grateful to the people in your life, and practice saying thank you for any politeness they show you.

    For thousands of years comets have been a mystery to man. They travel across the sky very fast and have a bright “tail” of burning gas. The comet Tempel 1 has an orbit（轨道） far outside the orbit of the furthest planet in our solar system, Pluto. It has been there for 4.6 billion years, 133 million kilometers from Earth. Last week a little American spacecraft crashed into Tempel 1. The spacecraft had a camera and it took a photograph of the comet every minute before it finally crashed into its surface.

    The space mission to Tempel 1 cost $335 million and was called Deep Impact. The spacecraft was travelling at 37,000 kilometers per hour when it hit the comet and the crash completely destroyed the spacecraft. But before it hit the comet, the spacecraft took some amazing photographs. The last one was a close-up picture which the spacecraft took just 3 seconds before it crashed into the comet.

    “Right now we have lost one spacecraft,” said a delighted NASA engineer. Deep Impact was like a American Independence Day fireworks display. It took many years to plan and ended in an enormous explosion. 

    The spacecraft which crashed into the comet was made of copper and was the size of a washing machine. It was dropped from a mothership into the path of the comet and the mothership then photographed the cloud of ice, dust and organic chemicals that rose from the surface of the comet after the crash.

    The crash completely destroyed the spacecraft but nothing really happened to the comet: experts believe that the crash slowed the comet down by no more than 1/10,000 of a millimeter a second.The aim of the mission was to study for the first time the interior of a comet.

    The mothership was 480 km from the explosion and observed the crash and the explosion with instruments for 800 seconds. Seven satellites, including the Hubble space telescope, watched the moment of drama, and over the next day and night about 50 telescopes on Earth were watching the distant comet.

    Japanese researchers say they have developed a new type of glass that can heal itself from cracks and breaks. Glass made from a low weight polymer (聚合物) called “polyether-thioureas” can heal breaks when pressed together by hand without the need for high heat to melt the material.

    The research, published in Science, by researchers led by Professor Takuzo Aida from the University of Tokyo, promises healable glass that could potentially be used in phone screens and other fragile (易碎的) devices, which they say are an important challenge for sustainable (可持续的) societies.

    While self-healing rubber and plastics have already been developed, the researchers said that the new material was the first hard substance of its kind that can be healed at room temperature. The new polymer glass is “highly robust mechanically yet can readily be repaired by compression (压紧) at broken surfaces”.

The characteristics of the polyether-thioureas glass were discovered by accident by a graduate school student named Yu Yanagisawa, who was preparing the material as a glue. Yanagisawa found that when the surface of the polymer was cut, the edges would adhere to each other, healing to form a strong sheet after being manually compressed for 30 seconds at 21℃. Further experiments found that the healed material regained its original strength after a couple of hours.

    Yanagisawa told NHK that he didn't believe the results at first and repeated his experiments several times to confirm the finding. He said, “I hope the repairable glass becomes a new environment-friendly material that avoids the need to be thrown away if broken.”

    This is not the first time a polymer has been suggested as a healable screen for devices such as smartphones. Researchers at the University of California suggested the use of polymer that could stretch to 50 times its original size and heal breaks within 24 hours.

    Smartphone manufacturers have already used self-healing materials in devices. LG's G Flex 2 shipped in 2016 with a coating on its back was capable of healing minor scratches over time, although failed to completely repair heavier damage.

    According to the research conducted by repair firm iMend, over 21% of UK smartphone users were living with a broken screen, with smashed displays being one of the biggest issues alongside poor battery life.

    The Franklin Institute is one of the oldest and most beloved science museums in the United States.

    Why visit

    In 1824, the Franklin Institute opened in Independence Hall in memory of Benjamin Franklin and his scientific achievements. In 1934, with the construction of the current building and the nearby Eels Planetarium, it became a hands-on science museum.

    Today, it holds the distinction (荣誉) of being Pennsylvania's most visited museum. In the museum's rotunda (圆形厅), a 20 foot-tall marhle statue pays respect to the Founding Father and famous scientist.

    Must-See

    While the entire museum offers interactive (交互式的) fun, highlights include the high-tech Your Brain exhibits (展品), which offers a glimpse into the inner workings of the human brain; Sports Zone, which focuses on the scientific aspects of sports; Two Escape Rooms, where participants solve puzzles and riddles before lime runs out; and the on site Virtual Reality Demonstration Space.

    Pricing

    General Admission to the Franklin Institute includes access to three floors of hands-on science exhibits including permanent (永久的) interactive exhibits, Live Science programs, the Joel N. Bloom Observatory, and one show in the Fels Planetarium. Discounts are given for groups of 15 or more.

    To buy tickets, please click the ticket price to be directed to our online ticketing page where all the ticket prices are available. If you prefer to order tickets over the phone, please call 215-448 1200 (9: 00 a. m.—5: 00 p. m.)

    Member Tickets

    Members of the Franklin Institute receive exclusive (独有的) ticketing benefits, including discounted prices and no service fees. Please select your Membership level before buying member tickets.

    Just ask any new parent: Adding a baby to a household can also add stress to a career. Now, a new study backs that up with some astonishing numbers: After science, technology, engineering, and mathematics(STEM)professionals become parents, 43%of women and 23% of men switch fields, transition(转变)to part-time work, or leave the workforce entirely.

    Many researchers and parents already knew that STEM can be unwelcoming to parents, particularly mothers. But" the considerable departure was astonishing, "says Erin Cech, an assistant professor of sociology at the University of Michigan in Ann Arbor and lead author of the study, published in the Proceedings of the National Academy of Sciences. For both genders, "the proportions were higher than we expected."

    The surprisingly high reduction rate for men also highlights that" parenthood in STEM is not just a mothers' issue; it's a worker issue, "Cech says. She hopes that the findings" might motivate changes, "such as more paid parental leave from both government and employers and policies that better support flexible work time without a tight routine. "We are not suggesting that people who want families should avoid STEM; that's not the solution," she emphasizes.

    By 2018, 78% of new fathers were still working in STEM, the vast majority full time. For new mothers, 68% were still in STEM, but only 57% worked full time. For professionals without children, on the other hand, 84% of men and 76% of women were predicted to still be working in STEM full time in 2018. For the new parents across all fields, 16% of women were working part-time and 15% had left the workforce, as compared with just 2% and 3%, respectively, for men. These sharp differences make clear that, even though the reduction rate for fathers is higher than expected, mothers still face particular career challenges.

Human rubbish can be a cockatoo's (凤头鹦鹉) treasure. In Sydney, the birds have learned how to open dustbins and throw rubbish around in the streets as they hunt for leftovers. People are now fighting back.

When cockatoos learn how to open dustbin lids (盖子), people change their behavior, using things like bricks to weigh down lids, to protect their trash from being thrown about. That's usually a low-level protection and then the cockatoos figure out how to defeat that. That's when people strengthen their efforts, and the cycle continues.

Tricks such as attempting to scare the parrots off with rubber snakes don't work very well. Nor does blocking access with heavy objects such as bricks; cockatoos use force to push them off. Hanging weights from the front of the lid or placing items such as sneakers and sticks through a bin's back handles work better. Researchers didn't see any birds get inside bins with these higher levels of protection.

The findings suggest an arms race, but the missing piece is how the birds will respond as people try new ways of blocking bins. Some survey responses suggest that the parrots are learning.

Cockatoos may stay away from strategies that take too long to beat. Bricks, for instance, are easy to quickly push off a bin; breaking sticks placed through the bin's back handle could take more time. Perhaps if enough people in a neighborhood adopt a highly effective method, Clark. a behavioral ecologist says, the cockatoos may not find it worth it to stop by.