Some of the world's most important scientists think the idea of people living on Mars will come true one day. Stephen Hawking believed humans must move into space to survive. “Once we spread out into space and establish independent colonies, our future should be safe,” he said.

However, scientists will need to terraform Mars for people to be able to live. One of the main goals of terraforming Mars is to warm it up because the average temperature there is about -60. One idea for warming Mars is to build factories there that produce greenhouse gases. This could take many centuries. However, it should lead to rainfall and the growth of plants, resulting in more air that people can breathe.

Another big concern for scientists is whether humans can move to Mars and still stay healthy in mind and body. As a test, six people lived in a Mars-like environment in Hawaii for a year before “returning to Earth” recently. It was a 1,200-square-foot room that was on the side of a volcano and used the sun for energy. Christiane Heinicke, one of the people who lived there, said that one of the biggest issues was feeling bored. So humans on Mars would always need to keep themselves busy with various activities. Another important finding was that the people living together should all be able to get along and work together.

One particular organization based in Europe is planning to send the first humans to Mars before 2030. The organization believes that its project is giving people worldwide the chance to be part of the first human crew ever to live on Mars for good. However, many experts think the project’s cost of US$6 billion is too low for it to be successful. The American space agency NASA believes that sending people to Mars would cost about US $100 billion, although this estimate is based on bringing them back to Earth, too. Regardless, it seems that humans living on Mars may well happen a lot sooner than most people believe.

Famous scientist Stephen Hawking issued another warning for the earth. He said we had about 600 years before the earth turned into a fireball and if we didn't leave the earth soon, overpopulation would increase energy consumption and it would kill us all.

But Hawking had a plan. Speaking at the Tencent WE Summit in Beijing, Hawking called on investors to support his plan to travel to Alpha Centauri. At around 4 light-year away. It's the closest star system to the sun. The adventure would use a tiny spacecraft that travels at the speed of light. Such a system could reach Mars in less than an hour, or reach Pluto in days and reach Alpha Centauri in just over 20 years.

"Maybe if all goes well, sometime a little after the middle of the century, we'll have our first picture of another planet that may be the nearest from our earth and suitable for human- beings to survive on, " Pete Worden, the former head at NASA's AMES Research Center and Starshot Breakthrough director, said at the summit.

Professor Stephen Hawking warned "I don't think we will survive another 1,000 years without escaping our weak plane. We face a lot of intimidation: nuclear war, global warming and genetically engineered viruses, "said Prof Hawking, speaking to the Rạdio Times. "Although the chance of a disaster on the earth in a given year may be quite low, it adds up over time, becoming a near certainty in the next thousand or ten thousand years. By that time we should have spread out into space, and to other stars, so it would not mean the epd of the human race."

"However, we will not establish our base in space for at least the next hundred years, so we have to be very careful in this period." Stephen Hawking also said.

It’s 8 a. m., Tuesday, Nov. 18, 2028, and you are heading for a business appointment 300 miles away. You step into your circle, a two-passenger air-cushion car, press a series of buttons and the national traffic computer notes your destination, figures out the current traffic situation and signals your car to slide out of the garage. Hands free, you sit back and begin to read the morning paper — which is mashed on a flat TV screen over the car’s dashboard. Tapping a button changes the page.

The car speeds up to 150 mph in the city’s countryside, and then hits 250 mph in less built-up areas, driving over the smooth plastic road. You fly past a string of cities, many of hem covered by the new domes (圆屋顶) that keep them evenly climatized all year round. Traffic is heavy, typically, but there’s no need to worry. The traffic computer, which sends and receives signals to and from all cars on the road between cities, keeps vehicles at least 50 yds apart. There hasn’t been an accident since the system began.

Suddenly your TV phone buzzes. A business partner wants a sketch of a new kind of impeller your firm is producing for sports boats. You reach for your case and draw the diagram with a pencil-thin infrared flashlight (红外线手电筒) on what looks like a TV screen lining the back of the case. The diagram is sent to a similar screen in your partner’s office, 200 miles way. He presses a button and a fixed copy of the sketch rolls out of the machine. He wishes you good luck at the coming meeting and signs off.

Ninety minutes after leaving your home, you slide beneath the dome of your destination city. Your car slows down and heads for an outer-core office building where you’ll meet your colleagues. After you get out, the vehicle parks itself in a garage to await your return. Private cars aren’t allowed inside most city cores. Moving sidewalks and trams (有轨电车) carry the public from one location to another.