While dog keepers realize their dogs can read their moods accurately, scientists have always been a little doubtful. Now thanks to some researchers at the University of Veterinary Medicine in Vienna, Austria, we finally have some convincing evidence.

    For their study, biologist Corson Miller and his team exposed eleven selected dogs to digital images of women that were either angry or happy. Half the dogs were rewarded for touching the screen when shown a happy face, while the other half got their treat for selecting those that appeared angry.

    Interestingly, the dogs were not provided with the entire face. Some dogs were shown only upper halves while the others observed lower halves. That's because the scientists believe humans show their emotions on their entire face.

    After some training like how to recognize small differences like the wrinkles between the eyes or the changes in their shape that accompany the happy or angry expressions, the dogs were mostly able to identify the correct expression not only on a familiar face but on a strange face. The researchers concluded the dogs were smart enough to read human emotions.

    They also found those being trained to read angry expressions took a longer time to learn. They guess it may be because dogs find angry faces disgusting, causing them to withdraw quickly. However, once the smart dogs realized they were getting rewarded, the trepidation seemed to disappear. In fact, the dogs had such a good time playing the computer "game" that scientists had a hard time keeping them away from the touch screens after the study was completed.

    The researchers also noticed only dogs with a male owner had a harder time understanding the expressions correctly. Since the touchscreen models were all females, this confirmed what has been observed in previous studies—dogs are more efficient at reading facial expressions of people that are the same gender as their owner.

When someone is happy, can you smell it?

    You can usually tell when someone is happy based on seeing them smile, hearing them laugh or perhaps from receiving a big hug. But can you also smell their happiness? Surprising new research suggests that happiness does indeed have a scent, and that the experience of happiness can be transmitted through smell, reports Phys.org.

    For the study, 12 young men were shown videos meant to bring about a variety of emotions while researchers gathered sweat samples from them. All of the men were healthy and none of them were drug users or smokers, and all were asked to abstain from drinking or eating smelly foods during the study period. 

    Those sweat samples were then given to 36 equally healthy young women to smell, while researchers monitored their reactions. Only women were selected to smell the samples, apparently because previous research has shown that women have a better sense of smell than men and are also more sensitive to emotional signaling—though it's unclear why only men were chosen to produce the scents.

    Researchers found that the behavior of the women after smelling the scents—particularly their facial expressions—indicated a relationship between the emotional states of the men who produced the sweat and the women who sniffed them. 

    “Human sweat produced when a person is happy brings about a state similar to happiness in somebody who breathes this smell,” said study co-author Gun Semin, a professor at Koc University in Turkey.

    This is a fascinating finding because it not only means that happiness does have a scent, but that the scent is capable of transmitting the emotion to others. The study also found that other emotions, such as fear, seem to carry a scent too. This ensures previous research suggesting that some negative emotions have a smell, but it is the first time this has proved to be true of positive feelings.

    Researchers have yet to isolate(分离) exactly what the chemical compound for the happiness smell is, but you might imagine what the potential applications for such a finding could be. Happiness perfumes, for instance, could be invented. Scent therapies（香味疗法）could also be developed to help people through depression or anxiety.

    Perhaps the most surprising result of the study, however, is our broadened understanding of how emotions get communicated, and also how our own emotions are potentially managed through our social context and the emotional states of those around us. 

    When Chris moved in across the hall from Norma Cook four years ago in a Los Angeles-area apartment complex, the 31-year-old actor waved to his 85-year-old neighbor for a few weeks before finally knocking on her door and introducing himself. “The day I entered her apartment and spoke with her face to face was the day my life was changed forever,” Chris said.

    He learned that Cook had no family living in California and that she suffered from a long list of illnesses, including leukemia (白血病). The pair quickly became close friends, as Chris took her to doctor's appointments, cooked with her and they ran errands (差事) together. He shared their adventures on social media. But recently, Cook's health declined and she was in and out of the hospital several times. She once spent weeks in the hospital fighting pneumonia and breathing issues.  Eventually Cook was told by one of her doctors that she could no longer live at home unless she had 24-hour care. Because Cook had no money saved to pay her health care costs, Chris started a Go Fund Me account to help cover her bills.

    But caretakers are expensive and Cook quickly ran out of the $34,445 they raised. Knowing her days at home were limited, Chris invited Cook to move in with him to save money.“ She loves it! I do most of my work at home so I am here most of the time to care for her. It only made sense to both of us.” Chris wrote. “She is my adopted grandmother after all and I am her grandson she never had.”

    “Cook still has weekly hospice health care visits and regular visits from caregivers, so any funds raised cover those expenses,” he wrote. Though doctors say Cook's days are very limited, the pair are enjoying spending time together drinking champagne and snuggling with her cat, Hermes, who also made a move.

    “She does not want to change,” Chris told Today. “My apartment was the only place she would have moved. She has strong opinions about where she wants to carry out the rest of her days, and she wants to stay here.” Chris says he feels like the relationship was fate. “Moving her in....it feels as though it was meant to be all along, ” he said. “It's really fulfilling to be there for her.”

    Scientists say a huge percentage of bird species are in danger because their habitats, or homelands, are disappearing.

    Traditional migration (迁徙) paths take birds through countries that are not protecting the places for birds to stop, rest and feed. The scientists studied the migration or flight paths of almost 1,500 species. They decided that 91 percent of them passed through dangerous areas.

    The major danger for migratory birds is development. Buildings and pavements have covered the places where birds stop and feed as they move from one part of the world to another. One of the scientists who worked on the study says "Many of these important places have been lost to land reclamation because of urban, industrial and agricultural land expansion".

    The problem, according to scientists, is that many of these small birds die along their migration paths because they don't have a safe place to feed and rest. There is no place to restore (恢复) their energy for the next part of their journey. Countries in North Africa, Central Asia and those along the coasts of East Asia are having the most difficult time in protecting land. The scientists say these countries do not have enough areas that are safe for birds. One species that doesn't exist now is the Eskimo curlew. "Our world gets poorer every time we lose a species," one of the scientists says.

    The researchers say countries need to work together and come up with safe stopping areas for birds that pass through their boundaries. For example, one country might have preserved safe zones for migrating birds. But a neighbor country might not. A bird might die.

    One scientist who is not connected with the report tells Los Angeles Times that while some habitats are changing, more work can be done to make urban areas safe for birds.

    He says small changes, like planting more native plants or keeping cats out of the areas birds would be likely to use, could make a big difference.

Are you a moviegoer? If, like me, you're a fan of film, then there's no better place to watch something than on the big screen at the cinema. You enter the dark theatre and take your seat, ready to be entertained. But while you are absorbed in some movie magic, many others are now getting their film fixed at home.

Over the last few years, cinemas have seen a comeback. Customers have been attracted by comfortable seats, and lots of choice of things to watch. Multiplexes in particular can screen up to twenty films at the same time, suiting all different tastes. In addition, 3D and even 4D movies can give the audience an extra immersive experience. So what's not to like about a trip to the cinema?

The coronavirus pandemic has put the future of cinema under the spotlight. Some have had to close because of reduced ticket sales. In the UK, it's brought about a surge in TV watching and online streaming. It's reported that half of UK adults will keep and continue using their new streaming subscriptions.

This isn't great news for cinemas. They rely on the release of a big blockbuster to bring the crowds back, but the launch of new films, such as James Bond: No Time To Die, are being delayed. Disney has released its $200m blockbuster, Mulan, online instead of in movie theatres. John Fithian, from the National Association of Theatre Owners, told Variety magazine: This idea of waiting out the pandemic to make your movies more profitable doesn't make sense to me. There won't be as much of an industry left to play your movies in if you do that. "

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