Zebra crossings－the alternating dark and light stripes on the road surface－are meant to remind drivers that pedestrians may be trying to get across. Unfortunately, they are not very effective. A 1998 study done by the Department of Traffic Planning and Engineering at Sweden's Lund University revealed that three out of four drivers maintained the same speed or even speeded up as they were approaching a crossing. Even worse, only 5% stopped even when they saw someone trying to get across.

    Now a mother-daughter team in Ahmedabad, India has come up with a clever way to get drivers to pay more attention－a 3-D zebra crossing with an optical illusion (视错觉).

    Artists Saumya Pandya Thakkar and Shakuntala Pandya were asked to paint the crosswalks by IL&FS, an Indian company that manages the highways in Ahmedabad. The corporation was looking for a creative solution to help the city's residents to cross the busy accident-prone  (易出事故的) roads safely. Thakkar and Pandya, who had previously seen images of 3-D zebra crossings that gave drivers the illusion of logs(原木)of wood on the streets in Taizhou, China, decided to test if a similar way would work in India.

    Sure enough, in the six months that the 3-D crosswalks have been painted across four of the city's most dangerous highways, there have been no accidents reported! The artists say that while it may appear that the zebra crossing could cause the drivers to brake suddenly and endanger the vehicles behind, such is not the case. Because of the way the human eye works, the illusion is only visible from a distance. As they get closer, the painting looks just like any other ordinary zebra crossing. The creators hope that their smart design will become increasingly common throughout India and perhaps even the world. So let's look forward to it.

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    Denali National Park, Alaska

    History

    Within Denali National Park, the Toklat River will always have a special significance, as it was the location where naturalist Charles Sheldon built a cabin and was so moved that he fought to preserve the land. He moved back east and spent nine years lobbying (游说）to create Alaska's first national park.

    When to Visit

    To avoid the crowds, visit in June, but keep in mind that there are up to 21 hours of sunlight in Alaska in summer. If it seems like a bit much for your taste, try visiting in late August or September.

    If you visit to climb Mount McKinley, May and early June are the best times to climb.

    Major Attractions

    It is difficult not to see Denali's largest attraction towering 20,320 feet high. Mount McKinley can even be seen up to 70 miles away on a clear day. If you brave the climb to the top, you will be rewarded with charming views of the Alaska Range.

    Sable Pass is a prime spot to view grizzly bears. Closed to off-road foot traffic, the area is popular for bears feeding on berries, roots, and even occasionally on other mammals.

    Beginning at just below the summit of Mount McKinley, Muldrow Glacier flows 35 miles through a gorge and across the tundra. Twice in the last hundred years, the Muldrow has surged (涌动）, most recently in the winter of 1956-1957.

Accommodation

    Five campgrounds are located within the park, and many are open from late spring to early fall.Note: reservations are strongly recommended during summer. Riley Creek campground is open all year round, and all but two (Sanctuary and Wonder Lake) offer RV (可供居住的大篷车）sites.

    Also within the park are a few lodges (旅馆）—North Face Lodge, Denali Backcountry Lodge and Kentishna Roadhouse.

    Dublin City Guide

    Delightful and full of surprises, Dublin packs a blow that, delivered correctly, will leave you a shock. Dublin, locals will tell you, has personality, which is much more important than good looks and will last far longer. That's big talk for a small capital in true Irish style.

    About Dublin City Guide

    One Dublin author, over 500 hours of research, and over 300 shopping, eating and drinking recommendations.

    Insights into city life, from a local fashion designer's shopping tips to a food expert's top restaurant picks.

    Explore the living places that inspired Dublin's literary greats—Swift, Yeats, Beckett and Joyce.

    Book (USD $21.99)

    What you get:

    1 printed book

    Pages: 276 pages, 12 color pages, 29 maps

    Size: 128mm×197mm

    Weight: 0.31kg/0.68lb

    About books only purchase: We'll send you the physical printed book but you won't be given access to our e-book downloads. Select “Book + E-Book” and you would also like to download a digital version of this book.

    E-Book (USD $ 15.39)

    “Contents”, “Getting Started” and “Index” are all free.

    “Background”, “Neighborhoods”, “Eating &Drinking” and “Sleeping” are $4.95 each.

Book and E-Book (USD $28.59)

    Including: 1 printed book and all PDF chapters—8 PDF files.

    About book + E-book: We'll send you the physical printed book and while that's on the way you can download our e-books.

    These days, it seems like everyone wants to go out into space and live on new planets. Rather than depend on another pre-existing planet, could we make a new, proper planet ourselves?

    To start with, if we do want to be living on it, we should find a good place in space to put the new planet. We'd want it to be in a habitable zone, meaning the planet should be at the right distance from its star to make sure there would be perfect temperatures and most importantly, liquid (液态的) water.

    We'd also need the right materials to make the planet. Our Earth is made up of many different elements (元素). If we made our own new planet we'd probably want it to have similar elements and a similar structure (结构). We'd also want enough water to form some oceans.

    But even if we get all of the materials creating a new planet like Earth could have many troubles. It might be something more like a huge space station. It would be pretty expensive if we wanted it to be super big.

    We would probably also need a lot of food since there's going to be many scientists and astronauts out in space working on this project!

    According to NASA, each astronaut uses about 0. 83 kilograms of food per meal, including 0.12 kilograms of packaging (包装) material. Without the weight of the packaging material, we'd need about 780 kilograms of food just to feed one astronaut for a year.

    Putting all these together could make it possible to make our own planet one day! In reality, creating a new planet would probably require a very modern technology and there would be tons of other things to think about. And if this is even possible, it likely won't happen for a very long time.

    I used to be crazy about the hunting season. The excitement of waiting for a prey(猎物)and the pride of showing off the kill fascinated me. However, everything changed after that cold morning.

    Early on that day of the late fall, I set off alone for the woods, packing a gun, a bottle of hot coffee and three thick sandwiches. After finding the fresh deer's tracks in the snow, I settled down behind a little bush.

I sat there for about an hour. It was then that I saw him. A deer, a big beautiful deer! There was no cover nearer to him than 30 yards. Surely I couldn't miss! I waited for him to realize I was there. I waited for him to be shocked and run away. But he fooled me completely. He came towards me! He was curious, I suppose, or maybe lie was stupid—how else can you explain it? Well, that deer walked right up to where I was sitting. Then he stopped and looked at me!

    What happened next is hard to believe, but it's true. And it all seemed quite natural. Just as when a friendly young deer comes near you, I reached up and scratched his head. And he liked to be scratched. In fact, he practically asked for more. Then, I fed him my sandwich! Yes, I know what a deer eats, but that deer ate my sandwich. Well, he finally went his way, down the hill and up the deer trail. Shoot him? Not me. You wouldn't have either, not after that. I just watched him go.

    When I was about half way back, I heard two shots, followed by a dull slam(撞击)a few seconds later. Those two shots usually mean a kill. I had forgotten there were other hunters that day.

    Those hunters would never know they could have scratched his head.

    I'm a single person and live with my dog. Jed isn't just my dog. He is my family. He goes everywhere with me. So I was overjoyed last year to hear that Bunnings was allowing dogs on a leash(皮带)- into their stores.

    But no sooner had the rule come in than it was quickly repealed(撤销). A little girl in Victoria had walked up to a Jack Russell in a store and been bitten(咬伤). That was it. No more dogs.

    I don't know the whole story. But here's what I have to say: dogs bite sometimes and kids are sometimes difficult to control.

    There is nothing I love more than a kid who wants to touch Jed. But what's even better is when they ask permission first.

    I was at my local dog park last week. It's huge, with an off-leash dog area to one side and a fenced-off kids' playground a good distance away. There was a family there that morning —parents and two young girls playing near the dog area. The elder girl started crying at the sight of Jed—" puppy! There a puppy! "Jed went right up and started licking(舔)her, which only made her cry louder.

    My dog was frightened and tried to get away. The little girl ran after him, shouting loudly. The parents did nothing; they just let their kid frighten my dog and then said I should have stopped him from licking her.

    While they had a choice to play elsewhere, I did not. So I had to walk Jed away.

    "I just don't want to have to meet a dog when I go shopping," said one caller on a radio show yesterday. Look, I get that. But the thing is, I don't always want to have your kid kick the back of my seat for two hours on a plane.

    When I lived in the UK and the US, I couldn't walk through the stores without stopping to pat dogs. Why can't we follow their practice?