Was hat sich die Evolution DABEI gedacht?! I Quarks

Quarks Dimension Ralph December 9, 2025
Video Thumbnail
Quarks Dimension Ralph Logo

Quarks Dimension Ralph

@dimensionralph

About

Herzlich willkommen bei „Quarks Dimension Ralph", dem Kanal von Quarks, in dem Ralph Caspers euch an die Grenzen der Wissenschaft mitnimmt! Schön, dass ihr hier gelandet seid! Aber war das euer freier Wille? Oder ist das, was ihr als freien Willen wahrnehmt vielleicht nur eine Illusion? Bei „Quarks Dimension Ralph“ geht es um echt komplizierte Fragen – von den Rätseln unseres Gehirns bis zu den Geheimnissen des Universums. Uns, und hoffentlich euch auch, macht es Spaß, über solche Fragen nachzudenken. Wir recherchieren gründlich, erzählen, wie Wissenschaftler:innen mit verblüffenden Experimenten nach Antworten suchen und ordnen die Ergebnisse ein. Auch wenn es für viele Fragen keine eindeutige Antwort gibt, liefern unsere Videos jede Menge Erkenntnisse mit Mindblow-Garantie. Impressum: https://www1.wdr.de/impressum/index.html Datenrichtlinie: https://www1.wdr.de/hilfe/datenschutz102.html Netiquette: https://www1.wdr.de/hilfe/kommentarregeln100.html

Video Description

Die gute Nachricht: Es könnte viel schlimmer sein! Babys kommen mit einem vergleichsweise kleinen Schädel zur Welt. Ihr Hirn ist – gemessen am Hirn der Erwachsenen – recht klein und unfertig, anders als das von Affenbabys. Die schlechte Nachricht: Es tut trotzdem schrecklich weh. Warum ist die Geburt so schmerzhaft? Menschliche Neugeborene sind im Vergleich zu anderen Primaten echt groß. Das ist vermutlich einer der Gründe für die Geburtsschmerzen. Außerdem ist bei Menschen das Verhältnis von Beckengröße zu Kindskopf ganz außerordentlich knapp. Um gesund auf die Welt zu kommen, mussten wir uns evolutionär ein bisschen anpassen. Zum Beispiel sind die Schädelknochen von Babys noch nicht fest miteinander verwachsen. Aber warum ist nicht einfach das Becken der Frau im Laufe der Zeit so breit geworden, wie es für eine leichte Geburt ohne Schmerzen nötig wäre? Dazu gibt es mehrere Thesen: Hypothese 1 Der aufrechte Gang: Mit einem breiten Becken wäre er – so die Vermutung – weniger energieeffizient. Hypothese 2 Die Thermoregulation: Damit der Körper nicht überhitzt, braucht er im Verhältnis zum inneren Volumen möglichst viel Oberfläche, über die Wärme nach außen abgegeben werden kann. Das klappt mit einem schmalen Becken besser als mit einem breiten. Hypothese 3 Der Beckenboden: Wäre das Becken viel breiter, könnten die Organe beim aufrechten Stehen stärker auf den Beckenboden drücken. Und das würde den Beckenboden zu stark belasten. Was an diesen drei Hypothesen dran ist, erzählt euch Ralph in diesem Video. *Kapitel* 0:00 Ralphs Geburt: Ralphs Mutter lernt das Fluchen 0:36 Die schwere Geburt: Kinderkriegen ist schmerzhaft und riskant 1:20 Multipar versus unipar: Der Mensch-Kaninchen-Vergleich 2:12 Darum tut die Geburt so weh: Größenvergleich Becken und Kindskopf 3:14 Schmales Becken, schwere Geburt: Hat die Evolution etwa gepennt? 3:57 Ein Vorteil: Kindsköpfe sind groß, aber flexibel 4:31 Fontanellen und Hirnwachstum: Babys kommen unfertig zur Welt 5:20 Warum ist das Becken nicht breiter geworden? 5:56 Hypothese 1: Es spart Energie 6:51 Hypothese 2: Es schützt vor Überhitzung 7:39 Hypothese 3: Es entlastet den Beckenboden 8:53 Trotz der Geburtsschmerzen: Sind wir am Sweet Spot? *✅ Linktipps* Wenn die Geburt zum Trauma wird – Sabrinas Albtraum im Kreißsaal I Quarks Doku https://www.youtube.com/watch?v=iVEot1IidK8&t=7s *📚 Unsere wichtigsten Quellen* Pavličev M, Romero R, Mitteroecker P. Evolution of the human pelvis and obstructed labor: new explanations of an old obstetrical dilemma. Am J Obstet Gynecol. 2020 Jan;222(1):3-16. https://pmc.ncbi.nlm.nih.gov/articles/PMC9069416/ Liaoyi Xu et al. ,The genetic architecture of and evolutionary constraints on the human pelvic form.Science388,eadq1521(2025) https://www.science.org/doi/10.1126/science.adq1521, https://www.researchgate.net/publication/390697427_The_genetic_architecture_of_and_evolutionary_constraints_on_the_human_pelvic_form Wells, J.C.K., DeSilva, J.M. and Stock, J.T. (2012), The obstetric dilemma: An ancient game of Russian roulette, or a variable dilemma sensitive to ecology?. Am. J. Phys. Anthropol., 149: 40-71 https://onlinelibrary.wiley.com/doi/10.1002/ajpa.22160 Grunstra, N. D. S. et al (2023). There is an obstetrical dilemma: Misconceptions about the evolution of human childbirth and pelvic form. American Journal of Biological Anthropology, 181(4), 535–544 https://onlinelibrary.wiley.com/doi/full/10.1002/ajpa.24802#ajpa24802-bib-0081 Warrener AG, Lewton KL, Pontzer H, Lieberman DE (2015) A Wider Pelvis Does Not Increase Locomotor Cost in Humans, with Implications for the Evolution of Childbirth. PLOS ONE 10(3): e0118903 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0118903 Grunstra NDS, Zachos FE, Herdina AN, Fischer B, Pavličev M, Mitteroecker P. Humans as inverted bats: A comparative approach to the obstetric conundrum. Am J Hum Biol. 2019; 31:e23227 https://onlinelibrary.wiley.com/doi/full/10.1002/ajhb.23227 👉 Hat dir das Video gefallen? Dann abonniere jetzt unseren Quarks-Kanal mit Ralph Caspers @DimensionRalph auf YouTube! Bei Quarks Dimension Ralph stellen wir die Fragen, die dir auf der Zunge liegen – über uns Menschen, unser Verhalten, unsere Welt und das Universum. Wir recherchieren da, wo’s spannend wird – kritisch und neutral. Jeden Dienstag um 17 Uhr gibt’s eine neue Folge mit Ralph – ehrlich, verständlich, visuell stark. 💬 Du hast eine Idee, Kritik oder einfach ’ne gute Frage? Schreib uns! Wir freuen uns auf den Austausch mit dir und der Community. Und hier findest du – auch von Quarks – unser Studio Q: @Quarks Unsere Kollegen von den Quarks Science Cops gibt's hier: @quarkssciencecops @wdr Autoren: Katrin Krieft, Ralph Caspers Schnitt und Grafik: Christian Kloprogge, Christoph Köster Sounddesign: Florian Ebrecht Redaktion: Wobbeke Klare #Geburt #ralphcaspers #dimensionralph

You May Also Like

Upgrade Your Everyday

AI-recommended products based on this video

Loading...
Amazon Echo Show 8 (newest model), With Spatial Audio, Smart Home Hub, and Alexa, Charcoal

Amazon Echo Show 8 (newest model), With Spatial Audio, Smart Home Hub, and Alexa, Charcoal

(21,817)
149.99
PrimeFREE delivery Saturday, June 14
9K+ bought in past month
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip

(26,751)
$118.98$114.22
FREE delivery Fri, Oct 17
10K+ bought in past month
Loading...
Wireless Earbuds, Bluetooth 5.4 Headphones, True Wireless Stereo Earphones with IPX7 Waterproof, Noise Cancelling Mic, Fast Charging and Comfort Fit Ear Buds for Sports/Workouts - Black

Wireless Earbuds, Bluetooth 5.4 Headphones, True Wireless Stereo Earphones with IPX7 Waterproof, Noise Cancelling Mic, Fast Charging and Comfort Fit Ear Buds for Sports/Workouts - Black

(1,741)
$19.99
FREE delivery Sun, Jun 22 on $35 of items shipped by Amazon
10K+ bought in past month
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone

(23,152)
$89.99$83.69
FREE delivery Thu, Sep 4
10K+ bought in past month
Loading...
Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

(38,487)
$199.00$187.32
FREE delivery Fri, Oct 3
10K+ bought in past month
Loading...
Smart Watch for Men/Women, 1.95" AMOLED Fitness Tracker Watches with Bluetooth Calls/Flashlight/100+ Sport Modes Heart Rate/Sleep Monitor Ultra Lightweight Ultrathin Design

Smart Watch for Men/Women, 1.95" AMOLED Fitness Tracker Watches with Bluetooth Calls/Flashlight/100+ Sport Modes Heart Rate/Sleep Monitor Ultra Lightweight Ultrathin Design

(0)
17.99
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
Loading...
Smart Watch for Men Women (Answer/Make Call), 1.96" HD Smartwatch Fitness Activity Tracker, 110+ Sports IP68 Waterproof, Heart Rate/Sleep Monitor/Pedometer/Calories, Fitness Watch for Android iOS

Smart Watch for Men Women (Answer/Make Call), 1.96" HD Smartwatch Fitness Activity Tracker, 110+ Sports IP68 Waterproof, Heart Rate/Sleep Monitor/Pedometer/Calories, Fitness Watch for Android iOS

(550)
24.99
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
100+ bought in past month
Loading...
Apple Watch Series 10 [GPS 46mm case] Smartwatch with Rose Gold Aluminium Case with Light Blush Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant
Best Seller

Apple Watch Series 10 [GPS 46mm case] Smartwatch with Rose Gold Aluminium Case with Light Blush Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant

(7,994)
$329.00$296.10
FREE delivery Thu, Jul 3
1K+ bought in past month
Loading...
Apple Watch Series 10 [GPS 42mm case] Smartwatch with Jet Black Aluminium Case with Black Sport Band - S/M. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant
Best Seller

Apple Watch Series 10 [GPS 42mm case] Smartwatch with Jet Black Aluminium Case with Black Sport Band - S/M. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant

(7,993)
$299.00$269.10
FREE delivery Thu, Jul 3
8K+ bought in past month
Loading...
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines
Best Seller

NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines

(117,789)
$99.95$75.43
FREE delivery Sun, Sep 21
30K+ bought in past month
Loading...
UGREEN Nexode Power Bank 20000mAh 130W Portable Charger 72Wh PD Fast Charging 3-Port USB C Battery Pack with TFT Smart Display for MacBook/iPad/iPhone 16/Samsung S24 and More

UGREEN Nexode Power Bank 20000mAh 130W Portable Charger 72Wh PD Fast Charging 3-Port USB C Battery Pack with TFT Smart Display for MacBook/iPad/iPhone 16/Samsung S24 and More

(1,903)
69.99
PrimeFREE delivery Saturday, June 14
500+ bought in past month
Loading...
ANKER 737 Power Bank, 24,000mAh 3-Port Laptop Portable Charger with 140W Fast Charging, Smart Display, for Outdoor Work, Compatible with iPhone 16/15/14 Series, Vision Pro, Samsung, MacBook, and More

ANKER 737 Power Bank, 24,000mAh 3-Port Laptop Portable Charger with 140W Fast Charging, Smart Display, for Outdoor Work, Compatible with iPhone 16/15/14 Series, Vision Pro, Samsung, MacBook, and More

(13,939)
109.99
FREE delivery Saturday, June 14
9K+ bought in past month
Loading...
VOLTME Portable Charger, Slim 10000mAh 5V/3A Power Bank, USB C in&Out High-Speed Charging Battery Pack, Travel Essentials Dual Output Compatible with iPhone 16 15 14 13 12 Samsung Google iPad etc

VOLTME Portable Charger, Slim 10000mAh 5V/3A Power Bank, USB C in&Out High-Speed Charging Battery Pack, Travel Essentials Dual Output Compatible with iPhone 16 15 14 13 12 Samsung Google iPad etc

(51)
19.99
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip

(26,751)
$118.98$114.22
FREE delivery Fri, Oct 17
10K+ bought in past month
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone

(23,152)
$89.99$83.69
FREE delivery Thu, Sep 4
10K+ bought in past month
Loading...
Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

(38,487)
$199.00$187.32
FREE delivery Fri, Oct 3
10K+ bought in past month
Loading...
Bose QuietComfort Bluetooth Headphones, Wireless Headphones with Active Over Ear Noise Cancelling and Mic, Deep Bass, Up to 24 Hours of Playtime, White Smoke

Bose QuietComfort Bluetooth Headphones, Wireless Headphones with Active Over Ear Noise Cancelling and Mic, Deep Bass, Up to 24 Hours of Playtime, White Smoke

(10,961)
249.00
FREE delivery Wednesday, June 11.
1K+ bought in past month
Loading...
Barnyard Designs Indoor Herb Garden Planter Set with Tray, Metal Windowsill Plant Pots with Drainage for Outdoor or Indoor Plants, Set/3 (Black)

Barnyard Designs Indoor Herb Garden Planter Set with Tray, Metal Windowsill Plant Pots with Drainage for Outdoor or Indoor Plants, Set/3 (Black)

(3,684)
26.95
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
100+ bought in past month
Loading...
Eye Contact Web Camera for Desktop Computer – 1080P USB Camera with Microphone & Stand, Center Cam for Laptop or Desktop, Manual Focus, Plug & Play for macOS & Windows(Black)

Eye Contact Web Camera for Desktop Computer – 1080P USB Camera with Microphone & Stand, Center Cam for Laptop or Desktop, Manual Focus, Plug & Play for macOS & Windows(Black)

(96)
37.39
PrimeFREE delivery Saturday, June 14
100+ bought in past month
Loading...
PEHAEL 3+3Pack for iPhone 17 Pro Max Privacy Screen Protector with Camera Lens Protector Full Coverage Anti-Spy Tempered Glass Film 9H Hardness Easy Installation Bubble Free [6.9 inch]

PEHAEL 3+3Pack for iPhone 17 Pro Max Privacy Screen Protector with Camera Lens Protector Full Coverage Anti-Spy Tempered Glass Film 9H Hardness Easy Installation Bubble Free [6.9 inch]

(151,641)
$7.99$6.39
FREE delivery Mon, Sep 29 on $35 of items shipped by Amazon
New on Amazon in past month
Loading...
Ailun 3 Pack Screen Protector for iPhone 16 Pro Max [6.9 inch] + 3 Pack Camera Lens Protector with Installation Frame,Sensor Protection,Dynamic Island Compatible,Case Friendly Tempered Glass Film

Ailun 3 Pack Screen Protector for iPhone 16 Pro Max [6.9 inch] + 3 Pack Camera Lens Protector with Installation Frame,Sensor Protection,Dynamic Island Compatible,Case Friendly Tempered Glass Film

(362,029)
$7.63
FREE delivery Wed, Aug 20 on $35 of items shipped by Amazon
10K+ bought in past month
Loading...
2025 AI Portable Fan Rechargeable, 4 Speeds 6600RPM Strong Airflow, Personal Waist Fan with up to 25H of Working Time, Hands-Free Hanging Neck Fan, Wearable Belt Fan for Camping, Outdoor, Jobsite

2025 AI Portable Fan Rechargeable, 4 Speeds 6600RPM Strong Airflow, Personal Waist Fan with up to 25H of Working Time, Hands-Free Hanging Neck Fan, Wearable Belt Fan for Camping, Outdoor, Jobsite

(1,636)
$19.98
FREE delivery Thu, Jul 3 on $35 of items shipped by Amazon
40K+ bought in past month