I met Gunter on a cold, wet and unforgettable evening in September. I had planned to fly to Vienna and take a bus to Prague for a conference. Due to a big storm, my flight had been delayed by an hour and a half. I touched down in Vienna just 30 minutes before the departure of the last bus to Prague. The moment I got off the plane, I ran like crazy through the airport building and jumped into the first taxi on the rank without a second thought.

That was when I met Gunter. I told him where I was going, but he said he hadn't heard of the bus station. I thought my pronunciation was the problem, so I explained again more slowly, but he still looked confused. When I was about to give up, Gunter fished out his little phone and rang up a friend. After a heated discussion that lasted for what seemed like a century, Gunter put his phone down and started the car.

Finally, with just two minutes to spare we rolled into the bus station. Thankfully, there was a long queue (队列) still waiting to board the bus. Gunter parked the taxi behind the bus, turned around, and looked at me with a big smile on his face. "We made it," he said.

Just then I realised that I had zero cash in my wallet. I flashed him an apologetic smile as I pulled out my Portuguese bankcard. He tried it several times, but the card machine just did not play along. A feeling of helplessness washed over me as I saw the bus queue thinning out.

At this moment, Gunter pointed towards the waiting hall of the bus station. There, at the entrance, was a cash machine. I jumped out of the car, made a mad run for the machine, and popped my card in, only to read the message: "Out of order. Sorry."

I ran back to Gunter and told him the bad news.

Four days later, when I was back in Vienna, I called Gunter as promised.

Heatherwick Studio recently built a greenhouse at the edge of the National Trust’s Woolbeding Gardens. This beautiful structure, named Glasshouse, is at the centre of a new garden that shows how the Silk Road influences English gardens even in modern times.

The latest     1     (engineer) techniques are applied to create this protective     2     (function) structure that is also beautiful. The design features ten steel “sepals (萼片)” made of glass and aluminium (铝). These sepals open on warm days     3     (give) the inside plants sunshine and fresh air. In cold weather, the structure stays     4     (close) to protect the plants.

Further, the Silk Route Garden around the greenhouse     5     (walk) visitors through a journey influenced by the ancient Silk Road, by which silk as well as many plant species came to Britain for     6     first time. These plants included modern Western     7     (favourite) such as rosemary, lavender and fennel. The garden also contains a winding path that guides visitors through the twelve regions of the Silk Road. The path offers over 300 plant species for visitors to see, too.

The Glasshouse stands     8     a great achievement in contemporary design, to house the plants of the southwestern part of China at the end of a path retracing (追溯) the steps along the Silk Route     9     brought the plants from their native habitat in Asia to come to define much of the     10     (rich) of gardening in England.

4 . I’ve been motivated — and demotivated — by other folks’ achievements all my life.

When I was a teenager, a neighborhood friend ________ a marathon race. Feeling motivated, I started running ________, but then two things happened. First, a girl I met one day told me she was ________ for a “super,” referring to a 52.4-mile double marathon. Then, the next day I went on my longest run — 15 miles. To be honest, I ________ it! Between the girl making my ________ seem small and the pure boredom of jogging, I decided that the only ________ I’d ever run again is if a big dog was running after me!

So I ________ cycling. I got a good bike and rode a lot. I ________ of entering cycle races until I flew to San Diego to visit my sister. While she was at work one day, I ________ her bike and went for a ride. The ________: the roads there went through large valleys where I’d be riding uphill for miles at a time. I’d never faced such ________. That day, I got ________ by about 100 “local” bikers who were used to such roads. When I got back home, suddenly riding my bike didn’t seem quite as ________.

I’ve ________ a lot since then. I’ve come to accept that whatever ________ I set for myself, they just have to be my own.

5 . Not all great writers are great spellers. If you want to be published, it's vital to submit a perfect, professionally presented manuscript (原稿).     1     No editor is likely to tolerate a writer who does not take the trouble to spell words correctly.

I keep two reference books close-by on my desk: dictionary and thesaurus (同义词词典). I don't trust my laptop's spellchecker.     2     Of course, these days there are plenty of online dictionaries and thesauruses, but I'm old-fashioned enough to prefer a hard cover and pages I can leaf through with my fingers. I use the Concise Oxford Dictionary and the Collins Thesaurus.

    3     It should give you a precise definition of each word, thus differentiating it from other words whose meanings are similar, but not identical. It will also usually show how the word is pronounced.

In addition, I have an old two-volume copy of the Shorter Oxford Dictionary, picked up a few years ago in a bookshop sale for just 99 pence. Of course, with its 2,672 pages, it's not exactly short. It contains around 163,000 words, plus word combinations and idiomatic phrases.     4     However, if I need to check the origin of a word or to look up examples of its usage, there's nothing better.

For well over a hundred years the most influential English dictionary was Samuel Johnson's Dictionary of the English Language published in 1755. "To make dictionaries is dull (乏味) work," wrote Johnson, illustrating one definition of "dull".     5     A few minutes spent casting your eye over a page or two can be a rewarding experience.

6 . In the race to document the species on Earth before they go extinct, researchers and citizen scientists have collected billions of records. Today, most records of biodiversity are often in the form of photos, videos, and other digital records. Though they are useful for detecting shifts in the number and variety of species in an area, a new Stanford study has found that this type of record is not perfect.

“With the rise of technology it is easy for people to make observations of different species with the aid of a mobile application,” said Barnabas Daru, who is lead author of the study and assistant professor of biology in the Stanford School of Humanities and Sciences. “These observations now outnumber the primary data that comes from physical specimens (标本), and since we are increasingly using observational data to investigate how species are responding to global change, I wanted to know: Are they usable?”

Using a global dataset of 1.9 billion records of plants, insects, birds, and animals, Daru and his team tested how well these data represent actual global biodiversity patterns.

“We were particularly interested in exploring the aspects of sampling that tend to bias (使有偏差) data, like the greater likelihood of a citizen scientist to take a picture of a flowering plant instead of the grass right next to it,” said Daru.

Their study revealed that the large number of observation-only records did not lead to better global coverage. Moreover, these data are biased and favor certain regions, time periods, and species. This makes sense because the people who get observational biodiversity data on mobile devices are often citizen scientists recording their encounters with species in areas nearby. These data are also biased toward certain species with attractive or eye-catching features.

What can we do with the imperfect datasets of biodiversity?

“Quite a lot,” Daru explained. “Biodiversity apps can use our study results to inform users of oversampled areas and lead them to places — and even species — that are not well-sampled. To improve the quality of observational data, biodiversity apps can also encourage users to have an expert confirm the identification of their uploaded image.”

7 . Is comprehension the same whether a person reads a text onscreen or on paper? And are listening to and viewing content as effective as reading the written word when covering the same material? The answers to both questions are often “no”. The reasons relate to a variety of factors, including reduced concentration, an entertainment mindset (心态) and a tendency to multitask while consuming digital content.

When reading texts of several hundred words or more, learning is generally more successful when it’s on paper than onscreen. A large amount of research confirms this finding. The benefits of print reading particularly shine through when experimenters move from posing simple tasks — like identifying the main idea in a reading passage — to ones that require mental abstraction — such as drawing inferences from a text.

The differences between print and digital reading results are partly related to paper’s physical properties. With paper, there is a literal laying on of hands, along with the visual geography of distinct pages. People often link their memory of what they’ve read to how far into the book it was or where it was on the page.

But equally important is the mental aspect. Reading researchers have proposed a theory called “shallowing hypothesis (假说)”. According to this theory, people approach digital texts with a mindset suited to social media, which are often not so serious, and devote less mental effort than when they are reading print.

Audio (音频) and video can feel more engaging than text, and so university teachers increasingly turn to these technologies — say, assigning an online talk instead of an article by the same person. However, psychologists have demonstrated that when adults read news stories, they remember more of the content than if they listen to or view identical pieces.

Digital texts, audio and video all have educational roles, especially when providing resources not available in print. However, for maximizing learning where mental focus and reflection are called for, educators shouldn’t assume all media are the same, even when they contain identical words.

8 . HABITAT RESTORATION TEAM

Help restore and protect Marin's natural areas from the Marin Headlands to Bolinas Ridge. We'll explore beautiful park sites while conducting invasive (侵入的) plant removal, winter planting, and seed collection. Habitat Restoration Team volunteers play a vital role in restoring sensitive resources and protecting endangered species across the ridges and valleys.

Groups of five or more require special arrangements and must be confirmed in advance. Please review the List of Available Projects and fill out the Group Project Request Form.

Volunteers aged 10 and over are welcome. Read our Youth Policy Guidelines for youth under the age of 15.

Bring your completed Volunteer Agreement Form. Volunteers under the age of 18 must have the parent/guardian approval section signed.

We'll be working rain or shine. Wear clothes that can get dirty. Bring layers for changing weather and a raincoat if necessary.

Bring a personal water bottle, sunscreen, and lunch.

No experience necessary. Training and tools will be provided. Fulfills (满足) community service requirements.