1 00:00:06,975 --> 00:00:09,476 Imagine being a fossil: 2 00:00:09,476 --> 00:00:11,799 touring the world's great museums, 3 00:00:11,799 --> 00:00:14,941 inspiring awe in onlookers of all ages, 4 00:00:14,941 --> 00:00:18,313 posing for hordes of fawning photographers. 5 00:00:18,313 --> 00:00:20,345 Sound like something you'd like? 6 00:00:20,345 --> 00:00:22,003 Well, good luck! 7 00:00:22,003 --> 00:00:25,876 At least 99.9% of creatures that have ever lived 8 00:00:25,876 --> 00:00:28,513 aren't preserved in the fossil record. 9 00:00:28,513 --> 00:00:29,865 But forget about them, 10 00:00:29,865 --> 00:00:30,848 everyone else will, 11 00:00:30,848 --> 00:00:32,561 and listen up! 12 00:00:32,561 --> 00:00:33,718 If you want your corpse 13 00:00:33,718 --> 00:00:37,413 in the exclusive 0.01% Club, 14 00:00:37,413 --> 00:00:40,063 the Hall of Preserved Fossil Fame, 15 00:00:40,063 --> 00:00:42,825 it will not be easy. 16 00:00:42,825 --> 00:00:45,481 You better work! 17 00:00:45,481 --> 00:00:47,916 Step one: die. 18 00:00:47,916 --> 00:00:51,116 It's a cold, hard fact of fossilization. 19 00:00:51,116 --> 00:00:53,148 Everything paleontologists find 20 00:00:53,148 --> 00:00:56,814 was once alive and, at some point, died. 21 00:00:56,814 --> 00:00:58,289 We'll skip the details 22 00:00:58,289 --> 00:01:02,125 and assume you had a long, fulfilling life 23 00:01:02,125 --> 00:01:04,917 so we can get to what is really important -- 24 00:01:04,917 --> 00:01:07,130 how you die. 25 00:01:08,145 --> 00:01:10,336 There are many ways to become a fossil, 26 00:01:10,336 --> 00:01:13,714 so let's highlight your top death options. 27 00:01:14,621 --> 00:01:17,018 You could get yourself trapped in tree sap, 28 00:01:17,018 --> 00:01:19,129 which, when hardens, turns into amber 29 00:01:19,129 --> 00:01:22,304 and can survive intact for millions of years. 30 00:01:22,304 --> 00:01:26,658 But unless you find a really big tree to sit under, 31 00:01:26,658 --> 00:01:28,636 amber preservation will likely remain 32 00:01:28,636 --> 00:01:32,777 the domain of insects and other very small animals. 33 00:01:32,777 --> 00:01:34,914 Generally, the right place to be 34 00:01:34,914 --> 00:01:36,552 if you want to end up a fossil 35 00:01:36,552 --> 00:01:39,570 is wherever sediment is actively being deposited, 36 00:01:39,570 --> 00:01:41,970 like a lake or an ocean floor. 37 00:01:41,970 --> 00:01:43,755 A mountaintop or prairie? 38 00:01:43,755 --> 00:01:45,219 Not good! 39 00:01:45,219 --> 00:01:46,510 You need to get buried, 40 00:01:46,510 --> 00:01:47,718 the faster the better, 41 00:01:47,718 --> 00:01:50,221 because the longer you hang around on the surface, 42 00:01:50,221 --> 00:01:51,720 the more likely you'll get eaten, 43 00:01:51,720 --> 00:01:52,550 scavenged, 44 00:01:52,550 --> 00:01:54,054 or otherwise destroyed 45 00:01:54,054 --> 00:01:56,930 before ever having a chance to get preserved. 46 00:01:56,930 --> 00:01:58,719 If you can get buried someplace 47 00:01:58,719 --> 00:02:00,465 with little to no oxygen, 48 00:02:00,465 --> 00:02:02,909 like a bog or a deep lake bottom, 49 00:02:02,909 --> 00:02:03,971 even better. 50 00:02:03,971 --> 00:02:06,552 That lack of oxygen will slow down your decay 51 00:02:06,552 --> 00:02:09,446 and give you more time to fossilize. 52 00:02:09,446 --> 00:02:11,658 So, let's say you're lucky enough to die 53 00:02:11,658 --> 00:02:13,652 and get buried in a shallow sea 54 00:02:13,652 --> 00:02:15,972 under muddy, sandy sediments. 55 00:02:15,972 --> 00:02:18,080 What's your next move? 56 00:02:18,080 --> 00:02:19,300 One option is a process 57 00:02:19,300 --> 00:02:21,246 called permineralization. 58 00:02:21,246 --> 00:02:23,388 While all your soft parts decay away, 59 00:02:23,388 --> 00:02:27,327 your bones get saturated with mineral-rich waters. 60 00:02:27,327 --> 00:02:30,752 Bit by bit, microscopic crystals precipitate 61 00:02:30,752 --> 00:02:31,761 out of these waters 62 00:02:31,761 --> 00:02:35,229 to fill in the empty spaces and pores in your bones. 63 00:02:35,829 --> 00:02:37,500 Otherwise, you'd better hope 64 00:02:37,500 --> 00:02:38,664 the sediments around you harden 65 00:02:38,664 --> 00:02:40,599 while your bones decay away 66 00:02:40,599 --> 00:02:43,134 and another sediment or mineral fills in the spaces 67 00:02:43,134 --> 00:02:44,723 your bones leave behind, 68 00:02:44,723 --> 00:02:48,694 creating a perfect cast of your skeleton. 69 00:02:48,694 --> 00:02:51,320 Over time, the sediments around your fossil 70 00:02:51,320 --> 00:02:54,479 will lithify or turn into rock. 71 00:02:54,479 --> 00:02:56,687 But you're not in the clear yet! 72 00:02:56,687 --> 00:02:58,530 Many things could happen 73 00:02:58,530 --> 00:02:59,420 to those sedimentary rocks 74 00:02:59,420 --> 00:03:00,826 that might destroy your chances 75 00:03:00,826 --> 00:03:02,733 of getting discovered. 76 00:03:02,733 --> 00:03:04,923 They could get uplifted into a mountain range 77 00:03:04,923 --> 00:03:06,422 and eroded away 78 00:03:06,422 --> 00:03:08,428 or carried along in an oceanic plate 79 00:03:08,428 --> 00:03:11,530 and subducted back into the Earth's mantle, 80 00:03:11,530 --> 00:03:14,842 melting your fossil into hot mush. 81 00:03:14,842 --> 00:03:17,011 Fingers crossed your rock surroundings 82 00:03:17,011 --> 00:03:18,760 will get gently lifted up 83 00:03:18,760 --> 00:03:20,553 by plate tectonics, 84 00:03:20,553 --> 00:03:22,013 sea levels will change, 85 00:03:22,013 --> 00:03:24,317 and you'll end up under dry land 86 00:03:24,317 --> 00:03:25,438 close to the surface, 87 00:03:25,438 --> 00:03:26,971 but not so close 88 00:03:26,971 --> 00:03:30,006 that erosion from wind and rain wipes you away 89 00:03:30,006 --> 00:03:32,982 before someone can come find you. 90 00:03:32,982 --> 00:03:35,993 The last step in this long process, 91 00:03:35,993 --> 00:03:39,904 an intrepid paleontologist has to come find you. 92 00:03:39,904 --> 00:03:41,916 Maybe she's a research scientist 93 00:03:41,916 --> 00:03:44,305 scouting for fossils your age and type 94 00:03:44,305 --> 00:03:46,305 or just an amateur collector 95 00:03:46,305 --> 00:03:49,307 hoping for a fortuitous find. 96 00:03:49,307 --> 00:03:52,385 She whacks away at layers of rock above you 97 00:03:52,385 --> 00:03:54,097 or spots your fossil exposed 98 00:03:54,097 --> 00:03:56,426 in a creek bank after a flood. 99 00:03:56,426 --> 00:03:58,612 And there you are, 100 00:03:58,612 --> 00:04:01,464 a magnificent scientific discovery, 101 00:04:01,464 --> 00:04:04,550 millions of years in the making! 102 00:04:04,550 --> 00:04:06,721 She and her colleagues gently extract you 103 00:04:06,721 --> 00:04:08,549 from the surrounding sediment, 104 00:04:08,549 --> 00:04:09,974 measure and photograph 105 00:04:09,974 --> 00:04:12,186 all the bits and pieces they find, 106 00:04:12,186 --> 00:04:14,826 and begin the complex task of reconstructing 107 00:04:14,826 --> 00:04:16,736 how and when you lived 108 00:04:16,736 --> 00:04:20,666 based on the evidence they find in your bones. 109 00:04:20,666 --> 00:04:24,506 Paleontologists will be some of your biggest fans 110 00:04:24,506 --> 00:04:28,048 along with all those admiring crowds at the museum. 111 00:04:28,601 --> 00:04:30,490 You made it! 112 00:04:31,094 --> 00:04:34,385 You spent years underground in obscurity, 113 00:04:34,385 --> 00:04:35,426 shedding blood, 114 00:04:35,426 --> 00:04:36,255 sweat, 115 00:04:36,255 --> 00:04:36,832 tears, 116 00:04:36,832 --> 00:04:39,257 and your internal organs. 117 00:04:39,257 --> 00:04:41,435 You worked yourself to the bone 118 00:04:41,435 --> 00:04:43,645 until your bones disintegrated 119 00:04:43,645 --> 00:04:47,209 and were replaced by minerals and sediments. 120 00:04:47,209 --> 00:04:50,181 But it was all worth it 121 00:04:50,181 --> 00:04:53,736 because you're a famous fossil! 122 00:04:53,736 --> 00:04:58,073 Now, you better hold that pose!