Reading is a challenge for millions of people. They may struggle with poor eyesight or other things. But with a computer, the OrCam Read can read any piece of text aloud. Users put the device (设备) above a page of a book, press a button, then the device starts reading aloud. The OrCam Read can also read text in different languages.

The Mega Cyborg Hand helps kids build a robotic hand that copies the movements of a real hand. You won’t find any wires (电线). Instead, the device has plastic pieces and tube (导管) filled with water. The Mega Cyborg Hand can fit arms of almost any size and it can pick up things easily.

A girl in a hospital had not eaten anything for two days. A nurse took Robin the Robot into the girl’s room. After chatting and playing games, Robin encouraged the girl to eat some food. Sure enough, she began to eat. With big eyes and cheerful voice, Robin is designed to help kids in hospitals. That’s not just a robot but a peer and a friend.

The mobiWAN helps you communicate by directing calls through your head. The headset speaker and microphone are created by Mobilus Labs and sounds are sent through the wearer’s head. This lets workers stay in touch in noisy places. “You can still hear someone talking, clear as day,” says Jordan McRae, the founder of Mobilus Labs.

Do you wear noise-canceling earphones (降噪耳机)? They can keep noise out. But sometimes, they can be dangerous when you cross a busy street and need to hear some noises around you. The US scientists made a new Al. It lets people pick a sound. If you pick the sound of people’s voices, all you will hear in the headphones is that sound. People can pick from 20 kinds of sounds, such as bird sounds and baby cries.

Check out this Wind Tree! It looks like a tree with 36 green “leaves”, but it’s a small wind turbine (涡轮机). It’s about 5 to 10 meters tall and easy to build. Each “leaf” can turn with the wind and create electricity (电). It can make 18, 000 kilowatt-hours (千瓦时) of energy in a year. That’s enough to power a house of four people.

Drivers usually need to wait for a long time for their electric cars to charge (充电). Now, a road in the US can charge electric cars (电车) as they drive along the road or park on it. There are charging coils (线圈) under the road, and the cars have special receivers. When the car comes near, the coils send electricity through a magnetic field (磁场). It’s safe for people and animals to walk on the roads.