Would you buy a car that released calming smells into the air when you are stuck in heavy traffic? Would you buy a robot that smells like a human being?

    Many people have seen the 3-D computer-made environments of virtual reality (VR). Now these virtual worlds will not just look and sound real. Researchers have created VR environments that even smell like the real things. With the new technology, users open a virtual door and step into a new environment, like a rainforest. After they enter this virtual world, special equipment releases forest-like smells into the air to make the experience seem more real.

    Suzanne Fisher-Murray said, “it is a really wonderful experience that you have because you're exploring this environment and you have smells with it.”

    In the United States, Smell-O-Vision was designed to provide smells during the showing of a movie. The Smell-0-Vision system was once popular in the 1960s. Now, Emanuela Maggioni says it is close to becoming popular again. “The connection with emotions, memories, and…the sense of smell,” Maggioni said. “It is unbelievable what we can do with technology.”

    The uses for smell technology are not just limited to films and the performing arts. Researchers showed a computer program where users could imagine themselves driving a car. The system included a special smell-spraying machine. Dmitrijs Dmitrenko said, “We want to deliver the smell of lavender（薰衣草）every time the person drives over the speed limit. We choose lavender because it's a very calming smell.”

    Scientists are experimenting with smell instead of sounds or image-based alerts on telecommunications equipment. And businesses are already using smell to influence people's behavior. “Not only.…in stores…But on the other side, you can create and stimulate immediate buying,” Maggioni said. “So you're in a library and you smell coffee and actually you are unconsciously having the need to drink a coffee.”

    It is often necessary to release a fish, that is, set it free after catching, because it is too small, or you just don't want to take it home to eat. In some cases, releasing fish is a good measure that will help keep fish variety and build their population size. The Department of Game and Inland Fisheries (DGIF) encourages fishermen who practice catch-and-release fishing to use a few simple skills when doing so. The advice provided below will help make sure that the fish you release will survive to bite again another day.

    —When catching a fish, play it quickly and keep the fish in the water as much as possible. Don't' use a net in landing the fish and release it quickly to prevent it from dying.

    —Hold the fish gently. Do not put your fingers in its eyes. Don't wipe the scales (鱼鳞) off the fish because it might cause it to develop a disease and reduce its chance of survival.

    —Remove your hook (鱼钩) quickly. If the hook is too deep or hooked in the stomach, cut the line and leave the hook in. The hook left inside will cause no serious problem to the fish.

    —Take good care of the fish by moving it gently in water. Release the fish when it begins to struggle and is able to swim.

    —Do not hold fish in a bucket or some other containers and later decide to release it. If you are going to release a fish, do so right away.

    With a little care and by following the suggestions given above, you can give the released fish a better chance of survival.

    To travel abroad, we often meet the problem of what to take and how to take it. Take as little as possible. Choose clothes for your use in different kinds of situations and when you have made your final choice, take half of it! It's always a big problem to take too many things, and anyway if necessary, you can buy what you need in America. Things like jeans, T-shirts and other clothes are good buys in the US. If you hunt around you can usually find something on sale.

    Whatever baggage you take, make sure it is easy to take. Getting on and off buses and trains, even just changing planes, can be a test if your bags are too heavy or too many. The best way is to take one holdall, like a suitcase or a backpack, and then a smaller bag. Even when you have to check in your holdall, at the airport or bus station, you can keep all your money and documents by your side. It is also a good idea to keep a change of clothing in your shoulder bag in case your suitcase or backpack gets lost by an airline or a bus company.

The means you choose to travel around the US will depend on your money, you time and something else. Since there are certain discounts available to travelers who buy their tickets outside the US, it is a good idea to make travel plans before you go. Also, when you buy your tickets outside the US, you save the eight percent sales tax. Travel is like everything else in America—you have to shop around for the best busy. Never be afraid to ask for the cheapest fare. The clerk seldom offers you the cheapest one.

    A retired United States soldier named Terry McGlade, who had served in Iraq and Afghanistan, his dog Major is a hero. He is specially trained to says sense when McGlade is about to have a seizure, get his phone and dial 911 for help.

    When Major had recently sensed an incident about to happen, and McGlade collapsed and hit the floor, Major was able to get to McGlade's phone, and more or less bite on the phone which is specially set up so that when multiple buttons are pressed and held in, it goes into emergency call mode, and dial 911.

    "He was actually able to get my phone out of my pocket," McGlade said.

    The 911 operators who got the call from Major said they never heard him bark or anything. However, they could hear what sounded like a confused man in the background, and did get quite suspicious after quite a few calls from McGlade's cell phone kept coming in. Quite clearly, Major was using his leg and also stepping on the screen to get the phone to díal for help.

    After Major was sure someone would be on their way to help, he then made his way out to the front of the house to wait. When police and ambulance arrived, he led them into the house and right to McGlade, still in distress.

    "I probably would have been in severe trouble if he wouldn't have called," McGlade said.

    McGlade was taken to the hospital, where he was kept overnight for observation, but thanks to his best friend, and now hero of the day, Major. He is feeling much better, and will make a full recovery with little risk of lasting damage from this particular incident.

Four Best Places to Travel for the Summer of 2019

    If you're still deciding where to take your summer vacation, 2019 brings major anniversaries, new flight routes, buzzy museum openings and more. In no particular order, check out our picks for where to travel this summer:

    Salar de Uyuni, Bolivia

    The Salar de Uyuni, or Uyuni Salt Flat, is a vast expanse near the Bolivian Andes that resembles ice. The surreal landscape is actually leftover salt from ancient lakes. A large lounge dome offers a public space with tables, floor cushions and hanging lanterns. Food is provided by Gustu in La Paz, considered one of Latin America's top restaurants. Beyond simply enjoying the food and scenery, guests can hike to the crater of Tunupa Volcano, mountain bike across the Salar or visit the village of Jirira. Come nightfall, on­site telescopes take full advantage of the star­flooded sky.

    Las Vegas

    There's the Park Theater, where up to 5,200 people can enjoy A­list artist residencies: Lady Gaga is currently in residence until November, with Janet Jackson and Cher starting this summer. For good measure, Bruno Mars will also be performing some dates in September. Daniel Humm and Will Guidara, perhaps best known for NYC's Eleven Madison Park restaurant, are behind the NoMad Restaurant and NoMad Bar. And foodies will no doubt want to experience Roy Choi's Best Friend, the first brick­and­mortar restaurant following his hugely successful Korean BBQ truck.

    Nova Scotia

    Nova Scotia often gets overlooked for popular provinces like British Columbia and Quebec, but its quiet charms are worth exploring. Cape Breton Island takes a bit of work to reach, but it's here that you'll find challenging hiking trails, a scenic driving route minus the traffic and real­deal Celtic culture. The Halifax Jazz Festival, held in the province's capital, is considered Nova Scotia's largest music festival, and goes down from July 9­14 on the waterfront.

    Grand Canyon

    It's the Grand Canyon's 100th anniversary as a national park, and there are multiple ways to celebrate this notable occasion. From June 22­29, stargazers can join amateur astronomers for free at the park's North and South Rims for the Star Party. Telescopes will be on hand to find planets (Jupiter and Saturn among them), star clusters and nebulae. There will also be slide show programs with a different focus each night, from protecting dark skies to learning how planets form. Constellation talks and night sky photography workshops are among the free offerings, just allow yourself enough time since you won't be the only one with this idea.

    Google's new camera, called Clips, is a small, smart device. It comes with a case that has a clip (夹子), but it's not designed to be worn on your clothing. Most interestingly, it uses artificial intelligence to take photography out of your hands so it can capture moments on its own.

    This roughly 2-inch by 2-inch camera, with a three-hour battery life and Gorilla Glass for toughness, is intended for candid moments, like when a child does something cute that may happen too quickly for you to pull out your smartphone.

    Onboard the Clips device, it uses machine learning algorithms (计算程序) to help capture scenes. Those algorithms include face recognition. "Once it learns that there's a face you see frequently, it'll try to get nice photos of those faces," said Juston Payne, the device's product manager. And they also want it to recognize facial expressions, which involved "training it to know what happiness looks like". The Google team also trained it to recognize what not to shoot—like when a child's hand is over the lens, or if it is tossed in a dark purse.

    The only way to see the images is by connecting the camera with your phone, as it has no screen for viewing or editing.

    Were people concerned it could seem strange? Yes, Payne admitted. But they said they addressed that by making it obvious what it is. A green light on the front signals that it is on. Besides, unlike a camera meant to monitor your home, it is not connected to the Internet.

    "This product is only possible because of the way that silicon has advanced" Payne said, noting that it was only in the past year or so that they could squeeze the technology down into a device this size. Going forward, we're likely to get more assistance from the artificial intelligence packed into our apps and gadgets.