Every year, the world’s best minds create new inventions that make our lives safer, easier and more fun. Here are four new inventions.

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We see 3D movies, games, TVs, and so on. Do you hear of 3D newspapers? Yes, here is a kind of newspaper from Belgian. And it was born on March 3rd, 2010. This is the first 3D newspaper in the world.

Huber Leklein with his friends began to make the 3D newspaper in January, 2010. They worked really hard. And they finished in March.

If you buy this newspaper, you can get a pair of free 3D glasses. All the pictures and ads in the newspaper are in 3D, but the articles are not in 3D. You can read this 3D newspaper by holding the newspaper 50cm away from the eyes. In fact, if people don' t wear the 3D glasses, they can't read the newspaper very well because the pictures and words in it are not clear.

People like reading 3D newspaper very much. But Hubert Lekein and his friends don't want to continue(继续) with it because they spent too much money and time.

A company in San Francisco, California, has found a way to turn used plastic bottles into women’s shoes.

Every day, millions of Americans drink water and other liquids from plastic bottles. More than 60 million of them are thrown away each day. Many of the plastic bottles end up in landfills (废弃物填埋场) or are burned with other waste products.

A San Francisco company called Rothy’s, however, turns this plastic waste into environmentally friendly shoes. Rothy Martin is the company’s founder. He explains how they turn plastic into soft material for your feet. They take the plastic, clean it, and break it down into small pieces. Then they press it through a machine that makes soft fibers (纤维). Those fibers are then put together. This is done by a 3D machine. It’s designed to reduce waste while making the shoes. The fabric (织物) and the inner part of the shoes are then joined to the shoes’ sole (鞋底). This outer sole is also made from environmentally friendly material: no-carbon rubber.

Rothy’s shoes are sold online. They are flat shoes, with either a rounded or pointed toe. They come in different colors and designs. They cost either $125 or $145 per pair, depending on the design. After American actress Gwyneth Paltrow discovered them last year, the sales for the shoes grew.

When the environmentally friendly shoes wear out, customers can return them at no cost to a company that uses the recycled materials to make other products. For now, the shoes are only sold in the United States.