Almost anywhere you go in the United States, you're bound to find a fast-food joint to serve you quick and tasty food. Datassential, a consumer research brand, conducted a survey and reported on the percentage of customers who said their last visit to one of these fast food joints.

Sbarro

Nothing says easy eating like ordering a pizza. In fact, you can quickly satisfy your Italian craving (渴望)by going to one of the Brooklyn-based pizza joints now located in over 20 countries. To prove how simple it is to get your extra large slice, take it from the 66 percent of customers who said they last went to Sbarro because it was a convenient option.

Denny's

This American diner is where you can go to order a Grand Slam at any hour of the day, Seriously, what could be better than a full plate of diner food at midnight? Perhaps some of their 24-hour locations contributed to 66 percent of customers saying that eating at Denny's was convenient for them.

Quiznos Subs

Making your own sandwich is a great option for a grab-and-go lunch, It's so convenient that 65 percent of customers said that's the reason why they last ate at a Quiznos, However, eating an Italian sub might not always be the healthiest option. These are the 9 foods nutritionists never order at fast food restaurants.

McDonald's

In the United States, there are over 14,000 McDonalds locations! Having so many golden arches glowing across the states helps place Mickey D's at the number one spot of most convenient fast-food restaurants. Of the customers surveyed, 72 percent went to McDonalds last because it was the most convenient option.

For the past four decades, Billy Bar - he insists his name be written with lower case letters only - has been living by himself in Gothic, Colorado, a ghost town deserted since the 1920s, passing the time by recording all sorts of data, from daily snowfalls, temperatures, snow melting, animal sightings, etc. He never imagined that the results of his 40-year hobby would one day help scientists better understand global warming and earn him a cool superhero name - The Snow Guardian.

Billy bar first came to Gothic in 1972 as a Rutgers University environmental science student doing water chemistry research. He liked the quiet life here so much that he completed his semester to get his degree and became a permanent resident of the mountainous ghost town. He had grown up in New Jersey, but never really liked being surrounded by so many people, so moving to this ghost town was a chance to get away from social pressure.

Bar began the winter of 1974 camping in a tent, which is not exactly ideal in a place where snow reaches twenty-five feet a year. Luckily, the owner of an abandoned mining shack was kind enough to let Billy move in, to keep him from freezing to death. It became his home for the next eight years, and also the place where he started his impressive database on snow. The modern-day hermit claims that the sole goal behind his epic journal was to fight boredom. There's not a lot to do in a ghost town in winter time, so he just started monitoring things like daily snowfalls, snow density, temperature, and anything else he could measure.“I didn't have anything else to do. It was simple curiosity," Billy says.

Today is Friday the 13th of the year. Even though the date is known throughout Western culture as one associated with negative things, it’s really just another Friday on the calendar. There is no scientific evidence to suggest this day has an increased chance of bad occurrences compared with other days. But that doesn’t mean scientists haven’t tried to find any.

In Thomas W. Lawsons 1907 novel, Friday, the thirteenth, a businessman takes advantage of the superstition (迷信) and creates a Wall Street panic on the day. The book was the likely inspiration for a number of scientific examinations of stock market returns on Fridays that fell on the 13th day of the month compared with all other Fridays. In 2001, Brian Lucey, a business professor at Trinity College Dublin in Ireland, published his analysis of a few of those studies and found several flaws. The studies had narrow assessments overall, focusing on just a few markets or a single stock exchange. But when he analyzed the data as a whole, Lucey found that internationally, with few exceptions, returns on Friday the 13th were typically just a little higher than returns on other Fridays.

The scientific evidence for cause and effect may not be there, but people may still alter their behavior on Friday the 13th in a way that causes certain things to happen. The way people drive might be different from their usual. But the few studies that have examined traffic accidents haven’t found statistically significant trends to suggest Friday the 13th is more dangerous than other Fridays on the road.

The science is clear: Friday the 13th is a normal day. Yet, people continue to think this is meant to be a bad day. “Psychologically, superstitions arise from the desire to influence external events, decrease anxiety and reduce uncertainty,” said Neil Dagnall, a psychologist at Manchester Metropolitan University. “Besides, I don’t think people know often why they do things.”

A Swiss airplane powered only by energy from the sun left from Abu Dhabi early on March 9. Its creators hope the plane will make the first around-the-world journey without any fuel. The plane is called Solar Impulse 2. It has one seat and is made from carbon fiber. The plane weighs only as much as a car but its wings are wider than a Boeing 747. The plane's wings stretch 72 meters across. Those wings include 17,000 solar units, or cells, which capture the sun's energy. The energy allows the plane to fly day and night.

Two Swiss scientists built the plane. Bertand Piccard is also an explorer who made the first non-stop flight around the world in a balloon. Andre Borschberg is an engineer and trained fighter pilot. The scientists say they are not trying to change the airplane industry. Instead, they want to show that new energy sources and technologies can achieve what some say is impossible."We want to show we can fly day and might in an aircraft without a drop of fuel." Mr Picard said.

Some parts of the trip will require the pilots to be in the tiny plane for five to six days and nights in a TOW. So it is good that the pilot's seat is also a toilet.

The plane's route begins in the United Arab Emirates. The pilots also plan stops in Oman, India, and China, They will cross the Pacific Ocean, stop in the United States, and continue over southern Europe or North Africa. They plan to arrive back in the United Arab Emirates in late July or early August.

Internet viewers can go to the Solar Impulse website to see the plane's location and listen to broadcasts from the pilots.