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    Women who own cats are more likely to have mental health problems and kill themselves because they can be infected by a common parasite that can be caught from cat litter, a study has found.

    Researchers found women infected with the Toxoplasma gondii (T. gondii) parasite(刚地弓形虫), which is spread through contact with cat waste or eating undercooked meat or unwashed vegetables, are at increased risk of attempting suicide.

    The study involved more than 45,000 women in Denmark. About a third of the world's population is infected with the parasite, which hides in cells in the brain and muscles, often without producing symptoms.

    The infection, which is called toxoplasmosis(弓形虫病), has been linked to mental illness, such as schizophrenia(精神分裂症), and changes in behavior.

    The study's senior author Doctor Teodor Postolache, an associate professor of psychiatry(精神病学) at the University of Maryland School of Medicine in the United States, said, “We can't say with certainty that T. gondii caused the women to try to kill themselves, but we did find a predictive association between the infection and suicide attempts later in life that deserves additional studies.”

    Doctor Albert Reece, vice president of medical affairs at the University of Maryland, said, “T. gondii infection is a major public health problem around the world, and many people don't realize they're infected.

    “Dr Postolache is a leading expert on suicide neuroimmunology(神经免疫学). Suicide is a critically important mental health issue. About one million people commit suicide and another 10 million attempt suicide worldwide each year. We hope that this type of research will one day help us find ways to save many lives that now end too early in suicide.”

    Dr. Postolache's research team at the University of Maryland was the first to report a connection between T. gondii and suicidal behavior in 2009. He is cooperating with researchers in Denmark, Germany and Sweden to confirm and investigate the way leading to this association.

    The T. gondii parasite thrives in the intestines of cats, and it is spread through their waste. All warm-blooded animals can become infected through contact with it. Humans can become infected by changing their infected cats' litter boxes, eating unwashed vegetables, drinking water from a polluted source, or by eating undercooked or raw meat.

    Not washing kitchen knives after preparing raw meat before handling another food item also can lead to infection. Pregnant women can pass the parasite directly to their unborn babies and are advised not to change cat litter boxes to avoid possible infection.

    Babies don't produce antibodies to T. gondii for three months after they are born, so the antibodies present in their blood represented infection in the mothers. The scientists studied Danish health patients to determine if any of these women later attempted suicide, including cases of violent suicide attempts which may have involved guns, sharp instruments and jumping from high places.

    The study found that women infected with T. gondii were one and a half times more likely to attempt suicide compared to those who were not infected, and the risk seemed to rise with increasing levels of the T. gondii antibodies.

    Dr Postolache noted limitations to the study, such as the inability to determine the cause of the suicidal behavior.

    The findings were published online in the Archives of General Psychiatry.

    The number of giraffes is becoming smaller across Africa, according to the Giraffe Conservation Foundation. The total population has dropped by 40 percent in the last 15 years. Surprisingly, even scientists haven't given much attention to giraffes. We are learning more about their ecology, but what we know is still way behind what we know about other species. "It's a silent extinction," said Dr. Julian Hennessy, a wildlife scientist.

    "The main reason for the smaller number of giraffes is their loss of living places," said Hennessy, "as an increasing part of land is used for farming. But hunting also has a big influence." You might wonder why hunters would focus on giraffes. First of all, once a giraffe is brought down, there is lots of meat with a small amount of effort. Besides, there is another thing encouraging the hunting. In Tanzania, Hennessy says, the latest word on the street is that eating giraffe meat could cure AIDS. Fresh giraffe heads and bones can be sold at prices of up to $140 per piece.

    Another widespread misconception about giraffes is that they are everywhere. Look at kids' books which are full of giraffes. They are always in zoo collections. They can be seen easily, so you don't think we have to worry about them. But the truth is that they are in danger of extinction. There is a lack of right and true data.

    Hennessy and other researchers are now pulling together the data needed to improve the situation of the entire giraffe species and all nine subspecies (亚种). The information will be used to change the giraffe's listing on the International Union for Conservation of Nature Red List, which now lists the species as of "least concern" but two subspecies as "endangered". "It's a lot of work to gather the necessary information," Hennessy says. "And several other giraffe subspecies will be recommended for endangered listings next year or the year after." He hopes that the world will finally start to take notice of how endangered these beloved animals have become.

    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.”

    Last fall, I happened to overhear a student telling the others he had decided not to sign up for an introductory philosophy course. The demands of his major, he said seriously, meant he needed to take "practical" courses, and "enlightenment" would simply have to wait. For now, employability was the most important.

    The students' conversation fits into a larger alarming narrative about the role of the humanities in higher education. In a time of dizzying technological achievement and of rapid scientific innovation, sceptics of the humanities may question the usefulness of studying Aristotle, the Italian Renaissance or Chinese fiction.

    Actually, I regret not interrupting that student to argue for taking that introductory philosophy course. I would have started by reminding him that, for much of America's history, college graduates were not considered truly educated unless they had mastered philosophy, literature, political theory and history. The key role of higher education was to invite students into the conversations about matters like what it means to be alive and the definition of justice. Fostering engagement with these subjects is still an essential part of the university's function in society.

    I would have also mentioned to the student that he was misinformed about the job market. It is true that many employers are looking for graduates with specialized technical skills, but they also look for other capabilities. As the world is transformed by artificial intelligence, machine learning and automation, the unique human qualities of creativity, imagination and moral reasoning will be the ultimate coin of the realm. All these skills are developed in humanities courses.

    Further, I would have argued that while a degree anchored in the sciences is an important precondition for many jobs, it is not the only route. Look no further than the founders of companies such as LinkedIn, Slack and Flickr, who are among the many tech businesspersons with degrees in the humanities, and who credit that training for their success.

    Contrary to the widely held belief that humanities majors have a hard time getting jobs, recent studies show that those with humanities degrees are successful in the workplace, experiencing low rates of unemployment and reporting high levels of job satisfaction. The ratio between average median(中位数) incomes for humanities degree holders and those with business, engineering, and health and medical sciences degrees has been shown to narrow over the course of a career.

    The case for the humanities can also be understood in less transactional terms and more as a foundational preparation for a life well lived. A humanities education plays a vital role in encouraging citizens to lead an examined life. It fosters critical thinking, self-reflection, empathy and tolerance, the usefulness of which only becomes more apparent as one navigates life's challenges.

    By all means, students should take courses they think practical and follow their interests, but if they also make a point of studying the literature of the Renaissance, or researching into modern poetry, or even taking introductory philosophy, we will all benefit.

    The best movies for teenagers are listed here. You can pick one for your teen to watch it with you or their best friends.

    ⒈Eighth Grade

    Kayla is a shy, socially anxious girl trying to get by the last few weeks of middle school. She earns the "most quiet" girl title in school, but at home, she posts online self-help and motivational videos that not many people watch. Kayla is raised by her single father Mark, who tries to disconnect Kayla from the social media.

    ⒉Dead Poets Society

    Mr. Keating, an English teacher, introduces his students, all set to become doctors and lawyers, to poetry and free-thinking. Each of his students deals with several issues. He encourages them to form the Dead Poets Society where they read and write poetry.

    ⒊The Hunger Games

    Based on a book by Suzanne Collins, the story is set in a country called Panem, which was once the ruins of North America. Every year, young boys and girls from the 12 districts of Panem fight in the Hunger Games, a televised competition in which the contestants (参赛者) compete against death.

    ⒋The Break fast Club

    It begins with five students at the Shermer High School, Claire, a princess, John a criminal, Andrew, an athlete, Brian, a bookworm and Allison, an unfortunate person, who are forced to spend 9 hours together on a Saturday. In spite of their differences, they find that their social problems are more similar than they think. The film tries to encourage breaking social boundaries for positive self-identification in the world.