﻿1
00:00:00,350 --> 00:00:05,286
Biomimicry comes from bios, meaning “life,” and mimesis, meaning “to imitate.”

2
00:00:05,286 --> 00:00:10,241
It is a fairly new science that studies nature for ways to answer the needs of humans.

3
00:00:10,259 --> 00:00:20,360
According to author and biomimicry expert Janine Benyus, nature has already invented many processes and products far superior to what humans have created.

4
00:00:20,360 --> 00:00:24,886
Benyus says that animals, plants, and microbes are the “consummate engineers.”

5
00:00:24,886 --> 00:00:28,796
They have discovered through trial and error what works and what doesn’t.

6
00:00:28,822 --> 00:00:31,760
Most important, they have figured out what lasts.

7
00:00:31,787 --> 00:00:35,796
Two examples of biomimicry are the airplane and the telephone.

8
00:00:35,800 --> 00:00:38,698
The Wright brothers studied birds to learn how they fly.

9
00:00:38,716 --> 00:00:46,993
Inventor Alexander Gramham Bell imitated the human tongue and eardrum to create his original telephone speaker and receiver.

10
00:00:47,012 --> 00:00:50,411
Velcro is another famous example of biomimicry.

11
00:00:50,433 --> 00:00:56,384
One summer day in 1948, Swiss inventor George de Mestral took his dog for a hike.

12
00:00:56,384 --> 00:00:59,256
They both returned from their walk covered in burrs.

13
00:00:59,256 --> 00:01:05,185
De Mestral studied one of the burrs under his microscope and discovered it was covered with tiny hooks.

14
00:01:05,185 --> 00:01:08,518
The hooks grabbed the loops in the fabric of the clothing and stuck.

15
00:01:08,534 --> 00:01:14,628
From studying the burrs, De Mestral got the idea to develop a hook and loop fastener made by nylon.

16
00:01:14,636 --> 00:01:18,710
He called it Velcro, a combination of the words velour and crochet.

17
00:01:18,732 --> 00:01:21,847
In 1955, he patented his design.

18
00:01:21,863 --> 00:01:25,662
Today, of course, Velcro is a multimillion-dollar company.

19
00:01:25,668 --> 00:01:31,412
Yet another example of a product conceived through biomimicry is a house paint called Lotusan.

20
00:01:31,422 --> 00:01:35,775
This paint mimics the self-cleaning properties of the lotus flower’s leaves.

21
00:01:35,799 --> 00:01:43,769
German botanist Dr. Wilhelm Barthlott discovered this process when he noticed that a lotus leaf is covered with tiny points.

22
00:01:43,769 --> 00:01:47,706
When a speck of dirt lands on the leaf, it perches atop those points.

23
00:01:47,707 --> 00:01:52,870
Then, as water flows over the leaf, it easily picks up the dirt and carries it away.

24
00:01:52,907 --> 00:01:57,250
Lotusan is guaranteed to stay clean for five years without washing.

25
00:01:57,263 --> 00:02:02,153
In the world of biomimicry, another major goal is to recreate spider silk.

26
00:02:02,166 --> 00:02:07,267
This substance is five times as strong as steel, yet remains light and elastic.

27
00:02:07,267 --> 00:02:10,267
Thus researchers are studying how spiders spin silk.

28
00:02:10,319 --> 00:02:15,316
So far, they know only that spiders first eat and digest insects for protein.

29
00:02:15,329 --> 00:02:20,776
Glands in the spider’s body then add water to the proteins to create a wet solution.

30
00:02:20,776 --> 00:02:29,306
When the spider squirts this wet solution through a tiny opening, the soluble proteins turn into an insoluble fiber, a strand of silk.

31
00:02:29,327 --> 00:02:35,400
This last step of the process is the secret scientists hope to be able to unlock and duplicate.
