Joseph Francis Charles Rock (1884–1962) was an Austrian-American explorer, botanist, and anthropologist(人类学家). For more than 25 years, he travelled extensively through Tibet and Yunnan, Gansu, and Sichuan provinces in China before finally leaving in 1949.

    In 1924, Harvard sent Joseph Francis Rock on a treasure hunt through China's southwestern provinces—the Wild West of their day. But gold and silver weren't his task: Rock, a distinguished botanist, sought only to fill his bags with all the seeds, saplings, and shrubs he could find. During his three-year expedition, he collected 20,000 specimens for the Arnold Arboretum(阿诺德植物园).

    Botany, though, was just one of Rock's strengths. As an ethnologist(民族学者), he took hundreds of photographs of the Naxi, a tribe in Yunnan province, recording their now-lost way of life for both Harvard and National Geographic, and took notes for an eventual 500-page dictionary of their language. His hand-drawn map of his travels through China's “Cho-Ni” territory, in the Harvard Map Collection, includes more than a thousand rivers, towns, and mountains indicated in both English and Chinese, and was so well made that the U.S. government used it to plan aerial missions in World War II.

    Scientist, linguist, cartographer, photographer, writer—Rock was not a wallflower in any sense. Arrogant and self-possessed, he would walk into a village or warlord's place “as if he owned the place,” said Lisa Pearson, the Arboretum's head librarian.

    In declaring his successful return under the headline “Seeking Strange Flowers, in the Far Reaches of the World,” the Boston Evening Transcript ran a large photo of the daring explorer wearing in a woolly coat and fox-skin hat. “In discussing his heroism including hair-raising escapes from death either from mountain slides, snow slides and robber armies, he waves the idea away as if it is of no importance.”

    The Arboretum and Rock parted ways after 1927, mainly because his trip cost Harvard a fortune—about $900,000 in today's dollars. Fortunately, many of his specimens, many of his amazing photos, and his great stories remain.

    My dad is the kind of parent that expects my best. He would never be angry if I failed at something as long as I tired. He never changes his mind after he makes it, which sometimes makes him seem too stubborn. My dad's strictness comes from the way he was raised. He grew up working long hours on his family farm. His dad was bad-tempered, and he would get angry enough to throw wooden boards at my dad when he did something wrong. In high school, my dad woke up at four in the morning to get his chores(家务杂事)done and walk to school so that he would make it to basketball practice by five.

    Through all of the duties my dad had at home, he played three sports and went to school on top of it. school would have been easy, but my dad had dyslexia(读写困难)which made it nearly impossible for him to read. Since dyslexia wasn't recognized back then, every teacher my dad had passed along thinking that he was just unable to learn. My dad struggled in school until one teacher took the time to sit down and teach him how to read and write.

    The best part about my dad is his attitude toward daily life. even though he likes things once right, he also knows how go to with the flow and have a good time. My dad doesn't worry about things he can't control. When he comes home from a terrible day at work, he always puts on a smile on his face because he knows family is a lot more important than any other tings.

    I know that I get my best qualities from my parents and the way they raised me. My dad has shown me that with discipline and hard work I can achieve anything, and have fun while doing it.

    Climate change has had a number of effects on cities around the world, including rising see levels. And, this has become an especially big problem for coastal cities. City officials must now prepare for higher tides on their coasts. The American city of Miami is one example. Located in South Florida, Miami is home to nearly 3 million people and billions of dollars in land and buildings.

    Miami is one of the cities in America most at risk for rising sea levels. The waterfront is central to Miami's culture and economy. But as the seas rise with climate change .the water will not stay put. Large parts of South Florida are in danger of being under water in the coming years. Across Biscayne Bay, the City of Miami Beach is making improvements - raising streets, adding water pumps and more.

    It is costing the city a lot of money. Local communities will spend 500 million dollars for the improvements. Thankfully, the residents, the folks that are paying the bill for this work, realize that the cost of doing nothing is much greater. A possibility officials are discussing with residents is for city to buy homes in some places where flooding has been a problem. The city would then turn that land into parks of grassland that could hold the water.

    Over time, the city may need to take bigger risks. Miami's future depends largely on how much, and how fast, the oceans rise.

    Caroline Lewis leads the climate activism group, the CLEO Institute. She says cities cannot avoid the need to move inland. But, she says，a well-planned withdrawal (撤退) could include measures to keep people safely in place for as long as possible. And, she says, the world could learn from such a model. In these two Florida cities built on wetlands, there remains a lot of hopefulness.

    The 14-year-old, Amit Dodani, a talented speaker and persuasive debater at school, suffered as a child from a speech disorder.

    He began working with a speech therapist (理疗师) when he was 6 years old, but it was his decision to try out for debate team at the end of seventh grade that helped him most.

    “That experience changed my life,” he wrote after his team went on to nationals. “It gave me hope, and helped me see my own true potential.”

    Since he launched MynameMystory last year, the site has attracted national and even international attention. Amit's mom said her son's website is meant to send a message that no one is alone in their experience, showing how people overcame their challenges and how others can, too.

    “The big thing that clicked in Amit was the belief that people are really needed (to help each other) in this country,” she said. “I wasn't surprised he wanted to do this, because at such a young age he had this spirit in him.”

    In addition to the website, Amit also wanted to expand the idea of sharing stories. So he asked his friends and classmates to donate books to distribute to local hospitals. He hoped to collect perhaps 1,000, but in just two weeks, he received more than 2,300 donations.

    “There was an absolute connection between the website and books,” Amit said. “But books are something that can really make a difference to someone who is in the hospital and can't go to school.”

    Amit said he's hoping to organize a large live event for MynameMystory at the end of this year at Chaminade High School in West Hills. Those who shared their stories on the website will be invited to speak and encourage others to share their stories of overcoming challenges.

    “We're hoping for big things,” Amit said. “We have a lot of events planned out for the future. The goal is basically to inspire people in a different way.”

    Let us begin by saying what causes our dreams. Our dreams do not come from another world. They are not messages from some outside source. They are not a look into the future, either.

    All our dreams have something to do with our feelings, fears, longings, wishes, needs and memories. If a person is hungry, or tired, or cold, his dreams may include a feeling of this kind. If the covers on your body, such as a quilt or a blanket, have slipped off your bed, you may dream that you are sleeping on ice or in snow. The material for the dream you will have tonight is likely to come from the experience you have today.

    So the subject of your dream usually comes from something that has effect on you while you are sleeping（feeling of cold, a noise, a discomfort, etc. ）and it may also use your past experiences and the wishes and the interests you have now. This is why children are likely to dream of fairies, older children of school examinations, hungry people of food, homesick soldiers of their families and prisoners of freedom.

    To show you how this is happening while you are asleep and how your needs and wishes can all be joined together in a dream, here is the story of the experiment. A man was asleep and the back of his hand was rubbed with a piece of absorbed cotton. He would dream he was in hospital and his charming girlfriend was visiting him, sitting on the bed and feeling his hand gently!

    There are some scientists who have made a special study of why we dream, what we dream and what those dreams mean. Their explanation of dreams, though a bit reasonable, is not accepted by everyone but it offers an interesting approach to the problem. They believe that dreams are mostly expressions of wishes that did not come true. In other words dreaming is a way of having your wishes carried out.

The prodigious ability of our species to rapidly assimilate vocabulary, expanding from a mere 300 lexemes by the tender age of two to an impressive repertoire exceeding 1,000 by the age of four, remains a subject of profound enigma. Certain scholars in the realms of cognitive science and linguistics have posited that the human mind enters the world equipped with innate cognitive predispositions and logical parameters that facilitate this linguistic feat. However, recent advancements in the sphere of machine learning have unveiled the potential for swift acquisition of semantic understanding from sparse data, eschewing the need for preconceived, hardwired assumptions.

An ensemble of researchers has triumphantly honed a rudimentary artificial intelligence construct to correlate visual representations with their corresponding lexical entities, utilizing a mere 61 hours of ambient visual recordings and auditory data—previously amassed from an individual known as Sam during the years 2013 and 2014. Though this represents but a minuscule fraction of a child's developmental chronicle, it transpires that this was sufficiently informative to incite the AI in discerning the significance of select vocables.

These revelations intimate that the process of linguistic acquisition may be more straightforward than hitherto presumed. It is conceivable that the juvenile mind does not necessitate a tailor-made, sophisticated linguistic apparatus to adeptly apprehend the essence of words, posits Jessica Sullivan, an adjunct professor of psychology at Skidmore College. "This is an exceptionally elegant inquiry," she articulates, as it presents corroborative evidence that rudimentary data extracted from a child's perspective is sufficiently abundant to initiate the processes of pattern recognition and lexical assimilation.

The recent scholarly endeavor also illustrates the plausibility of machines emulating the learning modalities inherent to human cognition. Vast linguistic models are typically nurtured on colossal datasets encompassing billions, if not trillions, of lexical permutations. In stark contrast, human beings manage with a significantly reduced informational intake, as articulated by the principal scribe of the study, Wai Keen Vong. With the appropriate genre of data, the chasm separating machine and human learning could be substantially bridged.

Nevertheless, further investigation is warranted in select dimensions of this pioneering research. The savants concede that their findings do not conclusively elucidate the mechanisms by which children amass vocabulary. Additionally, the study's purview was confined to the identification of nouns pertaining to tangible entities.

Despite these limitations, this represents a stride toward a more profound comprehension of our own cognitive faculties, which may ultimately contribute to the enhancement of human pedagogical practices, according to Eva Portelance, a scholar in computational linguistics. She remarks that AI research has the potential to shed light on enigmatic queries about our essence that have persisted over time. "We can harness these paradigms in a salutary manner, to the advantage of scientific discovery and societal progress," Portelance further elaborates.