How to fossilize...yourself - Phoebe A. Cohen
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0:07 - 0:09Imagine being a fossil:
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0:09 - 0:12touring the world's great museums,
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0:12 - 0:15inspiring awe in onlookers of all ages,
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0:15 - 0:18posing for hordes of fawning photographers.
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0:18 - 0:20Sound like something you'd like?
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0:20 - 0:22Well, good luck!
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0:22 - 0:26At least 99.9% of creatures that have ever lived
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0:26 - 0:29aren't preserved in the fossil record.
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0:29 - 0:30But forget about them,
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0:30 - 0:31everyone else will,
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0:31 - 0:33and listen up!
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0:33 - 0:34If you want your corpse
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0:34 - 0:37in the exclusive 0.01% Club,
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0:37 - 0:40the Hall of Preserved Fossil Fame,
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0:40 - 0:43it will not be easy.
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0:43 - 0:45You better work!
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0:45 - 0:48Step one: die.
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0:48 - 0:51It's a cold, hard fact of fossilization.
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0:51 - 0:53Everything paleontologists find
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0:53 - 0:57was once alive and, at some point, died.
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0:57 - 0:58We'll skip the details
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0:58 - 1:02and assume you had a long, fulfilling life
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1:02 - 1:05so we can get to what is really important --
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1:05 - 1:07how you die.
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1:08 - 1:10There are many ways to become a fossil,
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1:10 - 1:14so let's highlight your top death options.
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1:15 - 1:17You could get yourself trapped in tree sap,
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1:17 - 1:19which, when hardens, turns into amber
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1:19 - 1:22and can survive intact for millions of years.
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1:22 - 1:27But unless you find a really big tree to sit under,
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1:27 - 1:29amber preservation will likely remain
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1:29 - 1:33the domain of insects and other very small animals.
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1:33 - 1:35Generally, the right place to be
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1:35 - 1:37if you want to end up a fossil
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1:37 - 1:40is wherever sediment is actively being deposited,
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1:40 - 1:42like a lake or an ocean floor.
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1:42 - 1:44A mountaintop or prairie?
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1:44 - 1:45Not good!
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1:45 - 1:47You need to get buried,
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1:47 - 1:48the faster the better,
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1:48 - 1:50because the longer you hang around on the surface,
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1:50 - 1:52the more likely you'll get eaten,
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1:52 - 1:53scavenged,
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1:53 - 1:54or otherwise destroyed
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1:54 - 1:57before ever having a chance to get preserved.
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1:57 - 1:59If you can get buried someplace
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1:59 - 2:00with little to no oxygen,
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2:00 - 2:03like a bog or a deep lake bottom,
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2:03 - 2:04even better.
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2:04 - 2:07That lack of oxygen will slow down your decay
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2:07 - 2:09and give you more time to fossilize.
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2:09 - 2:12So, let's say you're lucky enough to die
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2:12 - 2:14and get buried in a shallow sea
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2:14 - 2:16under muddy, sandy sediments.
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2:16 - 2:18What's your next move?
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2:18 - 2:19One option is a process
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2:19 - 2:21called permineralization.
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2:21 - 2:23While all your soft parts decay away,
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2:23 - 2:27your bones get saturated with mineral-rich waters.
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2:27 - 2:31Bit by bit, microscopic crystals precipitate
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2:31 - 2:32out of these waters
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2:32 - 2:35to fill in the empty spaces and pores in your bones.
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2:36 - 2:38Otherwise, you'd better hope
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2:38 - 2:39the sediments around you harden
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2:39 - 2:41while your bones decay away
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2:41 - 2:43and another sediment or mineral fills in the spaces
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2:43 - 2:45your bones leave behind,
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2:45 - 2:49creating a perfect cast of your skeleton.
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2:49 - 2:51Over time, the sediments around your fossil
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2:51 - 2:54will lithify or turn into rock.
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2:54 - 2:57But you're not in the clear yet!
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2:57 - 2:59Many things could happen
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2:59 - 2:59to those sedimentary rocks
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2:59 - 3:01that might destroy your chances
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3:01 - 3:03of getting discovered.
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3:03 - 3:05They could get uplifted into a mountain range
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3:05 - 3:06and eroded away
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3:06 - 3:08or carried along in an oceanic plate
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3:08 - 3:12and subducted back into the Earth's mantle,
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3:12 - 3:15melting your fossil into hot mush.
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3:15 - 3:17Fingers crossed your rock surroundings
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3:17 - 3:19will get gently lifted up
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3:19 - 3:21by plate tectonics,
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3:21 - 3:22sea levels will change,
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3:22 - 3:24and you'll end up under dry land
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3:24 - 3:25close to the surface,
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3:25 - 3:27but not so close
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3:27 - 3:30that erosion from wind and rain wipes you away
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3:30 - 3:33before someone can come find you.
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3:33 - 3:36The last step in this long process,
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3:36 - 3:40an intrepid paleontologist has to come find you.
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3:40 - 3:42Maybe she's a research scientist
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3:42 - 3:44scouting for fossils your age and type
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3:44 - 3:46or just an amateur collector
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3:46 - 3:49hoping for a fortuitous find.
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3:49 - 3:52She whacks away at layers of rock above you
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3:52 - 3:54or spots your fossil exposed
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3:54 - 3:56in a creek bank after a flood.
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3:56 - 3:59And there you are,
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3:59 - 4:01a magnificent scientific discovery,
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4:01 - 4:05millions of years in the making!
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4:05 - 4:07She and her colleagues gently extract you
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4:07 - 4:09from the surrounding sediment,
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4:09 - 4:10measure and photograph
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4:10 - 4:12all the bits and pieces they find,
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4:12 - 4:15and begin the complex task of reconstructing
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4:15 - 4:17how and when you lived
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4:17 - 4:21based on the evidence they find in your bones.
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4:21 - 4:25Paleontologists will be some of your biggest fans
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4:25 - 4:28along with all those admiring crowds at the museum.
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4:29 - 4:30You made it!
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4:31 - 4:34You spent years underground in obscurity,
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4:34 - 4:35shedding blood,
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4:35 - 4:36sweat,
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4:36 - 4:37tears,
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4:37 - 4:39and your internal organs.
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4:39 - 4:41You worked yourself to the bone
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4:41 - 4:44until your bones disintegrated
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4:44 - 4:47and were replaced by minerals and sediments.
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4:47 - 4:50But it was all worth it
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4:50 - 4:54because you're a famous fossil!
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4:54 - 4:58Now, you better hold that pose!
- Title:
- How to fossilize...yourself - Phoebe A. Cohen
- Description:
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View full lesson: http://ed.ted.com/lessons/how-to-fossilize-yourself-phoebe-a-cohen
You can aspire to great things in life, but how about in death? Could you be one of the world's greatest fossils many years from now? To ensure being found by a future paleontologist, you'll need to die in a highly specific way (think within tree sap or on the bottom of the ocean floor), and nature takes care of the rest. Phoebe A. Cohen details the steps your body must take to find future fame as a fossil.
Lesson by Phoebe A. Cohen, animation by Anton Bogaty.
- Video Language:
- English
- Team:
- closed TED
- Project:
- TED-Ed
- Duration:
- 05:14
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