1 00:00:15,150 --> 00:00:25,149 In the last 50 years, the personal computer, the internet, and the smartphone have changed the way we live. 2 00:00:27,699 --> 00:00:32,399 But which other inventions and discoveries have transformed our lives? 3 00:00:33,740 --> 00:00:36,320 Let's take a trip back in time. 4 00:00:37,640 --> 00:00:44,240 By about 300,000 years ago, our ancestors had discovered fire. 5 00:00:45,219 --> 00:00:48,359 This meant they could keep warm and cook food. 6 00:00:49,119 --> 00:00:57,060 The invention of the wheel in 3500 BC made things easier to transport. 7 00:00:58,159 --> 00:01:02,020 In 2000 BC, the compass appeared in China. 8 00:01:02,960 --> 00:01:06,540 It helped people navigate without using landmarks. 9 00:01:08,280 --> 00:01:13,760 About 2000 years ago, also in China, paper was developed. 10 00:01:14,239 --> 00:01:23,620 Although first used for wrapping things, people eventually started writing on it. 11 00:01:23,620 --> 00:01:38,340 Johannes Gutenberg's invention of the printing press in 15th century Germany meant that people were able to print hundreds of copies of a page quickly. 12 00:01:38,340 --> 00:01:48,340 This led to the rise of science, filled our homes with books and gave us the newspaper. 13 00:01:49,140 --> 00:01:53,599 The late 19th century was a time of great change. 14 00:01:54,299 --> 00:01:55,680 The light bulb was invented. 15 00:01:57,060 --> 00:01:58,560 As was the car. 16 00:02:00,969 --> 00:02:04,290 The 20th century began with the creation of the airplane. 17 00:02:08,090 --> 00:02:12,969 The same century also gave us the radio and the television. 18 00:02:15,389 --> 00:02:19,810 By the end of the 1960s, we had even sent men to the moon. 19 00:02:23,199 --> 00:02:27,819 The smartphones we use today are more powerful than the computers 20 00:02:27,819 --> 00:02:31,560 which sent Neil Armstrong and Buzz Aldrin to the moon. 21 00:02:33,419 --> 00:02:36,219 Technology is changing fast. 22 00:02:36,960 --> 00:02:39,180 What will the next invention be?