Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?

    UBC Professor Simard explains how trees are much more complex than most of us ever imagined. Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their cooperation and support, passing around necessary nutrition “depending on who needs it”.

    Nitrogen (氮) and carbon are shared through miles of underground fungi (真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons (神经元) in our brains, and when one tree is destroyed, it affects all. Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest “We didn't take any notice of it.” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.

    In 1858, two men wanted to be elected United States Senator from Illinois. One was Stephen Douglas. The other was Abraham Lincoln. Douglas was already the Senator, but his term in office was up. Lincoln had once been a U.S. Representative but was then a lawyer in Illinois.

    The men agreed to have seven public meetings, or debates, in seven different cities in Illinois. That way, voters all over the state would have a chance to hear what each man stood for.

    The first debate was in Ottawa on August 21, 1858. The main thing the men disagreed on was slavery. Douglas believed that as new states joined the union, they should decide for themselves whether or not they wanted to be a slave state or a free state. Lincoln believed that slavery should not spread beyond the states that already had slaves. He said the United States could not survive as half-slave and half-free states.

    The debates drew large crowds in all seven cities. People in the entire country were paying attention. Lincoln lost the Senate race. The debates did, however, make him well known everywhere.

    In 1860, it was time to elect a new President. Lincoln won the Republican party's nomination(提名). Douglas won the Democratic party's nomination. The two men again faced each other to get the people's votes. This time Lincoln won. He became the nation's 16th President.

    The slavery issue was still causing bad feelings between slave and non-slave states. By the time Lincoln took over as President on March 4, 1861, seven states had left the union. A month later, the Civil War began.

    Where will you go to escape the stress of life and the noise of traffic? To find out, we turned to question-and-answer site Quora, where users have been sharing their opinions. From an Alpine palace in Germany to some amazing English views, these dreamy destinations are so magical that it's hard to believe they're real.

    Gaudi's otherworldly imagination

    Designed by one of Spain's most famous architects, Antoni Gauldi, the Roman Catholic church Sagrada Familia is a legend in itself Construction began in 1882, but less than a quarter of the project was complete when Gaudi died in 1926. Since then, work has progressed slowly. How about the ending? Architects plan to complete the project in 2026, the centenary of Gaudi's death.

    As Barcelona's most popular tourist site, Sagrada Familia attracts three million visitors every year for one good reason: It's a masterpiece unlike anything else in the world which is largely responsible for the city's lively personality.

    A setting that could steal the spotlight from any storybook hero

    With its valleys surrounded by lakes, rivers, hills and peaks, the Lake District in England's northwest is quite literally taken out of fairy tales. This place was Beatrix Potter's inspiration for Peter Rabbit and the residence（居所）of the Lake Poets, including William Wordsworth, Samuel Taylor Coleridge and Robert Southey.

    One of nature's most magical illusions

    Once upon a time in the faraway land of the Faroe Islands, Lake Leitisvatn became known as the most striking of all the islands' lakes. At more than 6km long, it is the biggest in the Faroe Islands. In reality, Lake Leitisvatn is actually no more than about 30m above sea level. A steep cliff in front of the lake and a clever camera angle make the lake appear to be much higher than it really is.

    Many Americans buy an evergreen tree for Christmas. They put the tree in their home and hang small lights and colorful things on it. The evergreen is usually a pine or a fir tree (冷杉树). It remains green during the cold, dark months of winter in the northern part of the world. So it is a sign of everlasting life.

    Early long ago, Romans probably planted evergreen trees during a celebration in honor of their god of agriculture. The Christmas tree may have developed from a popular play performed hundreds of years ago in what is now Germany. Traditionally, the play was on December 24th, the day before Christmas. The play was about the first people that God created—Adam and Eve. People put apples on an evergreen tree to represent the tree of knowledge in the Garden of Eden.

    By the year 1600, some Germans began bringing evergreen trees into their homes. They put fruit, nuts and sweets on the trees. They gave the food to the family members and friends after the holiday season. Some people say the German religious reformer (宗教改革者) Martin Luther was the first person to add lighted candles to the tree. They say he did this to show how wonderful the stars had appeared as he travelled one night.

    In the early 1800's, German settlers in the state of Pennsylvania were the first to celebrate the holiday with Christmas trees in the United States. The Christmas tree tradition spread to many parts of the world. Today, some form of the Christmas tree is part of most Christmas celebrations.

    Here are some great people and their achievements.

    Mary Anderson ­ windscreen wiper.

    Back on a freezing winter's day in 1902, Mary Anderson was travelling by train through New York City. Snow was falling, forcing the driver to stop repeatedly and get out to clear it. Each time the door opened, Mary suffered a gust of sub-zero air. She had an idea: why not make some kind of a rubber blade that could be operated from inside the vehicle? And that's exactly what she did.

    Josephine Cochrane ­ dishwasher

    The dishwasher dates back even earlier to the 19th century, and to the dinner parties thrown by a lady called Josephine Cochrane. As a frequent host, she wanted a machine that could wash dishes faster than people. Her response was to develop what was to become the first commercially successful dishwasher. Interestingly, innovation was in her blood: her grandfather had invented the steamboat.

    Stephanie Kwolek ­ Kevlar

    Kevlar is the lightweight fibre used in bulletproof vests. The material is used by millions every day and has saved countless lives. The super tough fabric is also used in objects ranging from gloves to airplanes. Incredibly, its strength-to-weight ratio(比强度) is five times higher than steel. Again, it was invented by a woman, the American chemist Stephanie Kwolek, in 1964.

    Grace Hopper ­ first compiler(编译程序)

    One of the most important inventions of the 20th century must surely be the computer programme. The world of programming is unbalanced in terms of gender. Men vastly outnumber women, and take home around 30% more pay than their female counterparts on average. But back in the 1940s and 1950s, women were at the forefront of this new field. Grace Hopper is credited with inventing the first compiler in 1952, which serves as the bridge between code and the binary(二进制的) ones and zeros understood by computers.

Cuyahoga Valley National Park Volunteer Program

Building a Community of Park Stewards

    Position Title: Wildlife Volunteer — Butterfly Monitors (2 positions)

    Dates: Mid May to September, 2020

    Hours: 8-16 hours/ week

    Location: Cuyahoga Valley National Park

    Duties: Park staff will train volunteers in butterfly identification and data recording for one week before volunteers work in team of two to help track butterfly monitoring areas. The three butterfly monitoring areas in the park are I to 2 miles in length and are walked one time per week. Butterflies are identified by using binoculars (望远镜) or by netting and releasing. Data is recorded on data sheets.

    Skills required: Applicants must have self motivation and desire to work with others. Volunteers will work during days when temperature is 70 degrees or more, between 10:30 am and 5 pm. Ability to walk a long distance in hot and humid conditions is needed. Skills with basic butterfly identification are not a must but helpful.

    Requirements: Applicants must be current Kent Stale University (KSU) students and a National Park Service Agreement must be completed. U. S citizenship is also required.

    How to Apply: Please request an application from Mike Johnson at gkovach@ kent.edu and send it back to Mike Johnson at gkovach@ kent.edu, by February 15, 2020. If offered an interview, please come to Cuyahoga Valley National Park with your personal resume introducing your education and previous work experience.

    For further information, please call Jamie Walters at (330) 657-2142 or email jwalters@ forcvng.org.