18 Science and technology, great personalities
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What have been some of the most dangerous or least helpful inventions in history?
An example of the most dangerous invention is the nuclear bomb because it can only cause destruction. The least helpful invention is television because it wastes a lot of time and stops people learning. Another dangerous invention are guns because they are used to kill people. And plastic is a terrible invention because it pollutes the environment.
How has digital technology changed our lives?
Digital technology has made it easier to communicate. It can store lots of information, so it is easier to conduct research or create images or work with sound and pictures on a computer. Digital technology has improved the quality of audio and video recording and has given people more access to information. It has reduced the cost of sending and storing information.