BeeOasis Step 5
Scientists have been experimenting with four-legged robots for years. They want robots to carry heavy loads over difficult areas of land and do other difficult jobs.
But one problem is power. Now that has changed. Engineers at the Massachusetts Institute of Technology (MIT) have designed a robot powered by batteries.
And the robot can run. In fact, scientists say their robots will soon be able to run like cheetahs, the fastest land animals on Earth.
To get power, the most powerful of these machines uses an external power source. Others use gasoline in the machine itself.
But the MIT engineers have designed a cheetah-like robot that is light and fast. The robot weighs just 30 kilograms, so it is light enough to run on batteries.
It can jump 40 centimeters high and land safely. It can run fast because it has a special motor. It is also strong, made of a light plastic material called Kevlar. Kevlar is used for modern military helmets and protective body clothing.
But the robot is not perfect yet. It still has some basic problems. The robot’s legs must support a great amount of force, and sometimes they break.
In the future, scientists may use ideas from this robot to make artificial legs and arms for humans. As engineering improves, these robots may help people do difficult and dangerous jobs. And one day, this technology may even help humans run as fast as a Cheetah.
This story was adapted from public domain content at learningenglish.voanews.com.