4.8 • 1.1K Ratings
🗓️ 27 December 2021
⏱️ 16 minutes
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0:00.0 | Let's say you and I are sitting in a big plane that's trying to land in storm. |
0:21.5 | To keep the aircraft on track as it approaches the runway, the pilot is continuing to make |
0:26.9 | constant corrections to allow for the changing gusts of wind. |
0:31.2 | Now as passengers were finding the experience pretty unsettling. Maybe we're |
0:37.2 | laughing nervously as the plane pitches and rolls. Maybe we're gripping the edge |
0:42.1 | of our seats silently praying. It's so bad that the pilot may even decide to abort |
0:48.1 | the landing altogether, pulling the nose up at the very last minute and turning |
0:52.4 | around in order to get us down safely. I don't know about you, but I'm hoping |
0:57.2 | that this pilot has a lot of experience. A storm like this is bad enough for |
1:05.3 | pilots of commercial passenger planes, but what if the aircraft you're trying to |
1:09.7 | control is a tiny drone? Well, that was a challenge facing a group of British |
1:16.3 | scientists who wanted to build a miniature drone that could keep flying for long |
1:20.1 | periods even in stormy conditions. And the solution they found was inspired by |
1:25.5 | the natural agility of an insect that's been dominating our skies for a very |
1:31.0 | long time. Dragonflies. Wherever in the world you're listening to this, you're |
1:41.3 | probably familiar with the beautiful and often brightly colored dragonfly. |
1:45.7 | This is because there are more than 6,000 known species of the |
1:50.3 | aquatic insect, which live in freshwater habitats like streams, ponds, lakes, |
1:55.2 | and rivers. Dragonflies are believed to be one of the first insects to inhabit |
2:00.8 | the planet, evolving some 300 million years ago. Now the dragonflies were |
2:06.9 | familiar with have a wingspan of around 5 to 10 centimeters, but back in the |
2:12.0 | Paleozoic era, they were much, much bigger. Fossils have been found to giant |
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