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Mass Extinctions

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Hank takes us on a trip through time to revisit the 5 major mass extinction events that have impacted species over the Earth's history, and...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 10:26 Rating: 4.963106 Views: 78518   Tags: extinction  mass extinction  scishow  science  biology  climate change  species  great dying  geological time scale  co2  temperature change  extinction rate  time machine  ordovician-silurian  die-off  glacier  glacial  gondwana  pangea  gamma ray burst  hypernova  ozone layer  extinction pulse  asteroid impact  supervolcano  late devonian extinctions  permian-triassic  dinosaur  cretaceous-tertiary  kt  human impact

Epigenetics

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Hank & his clone Circus Hank explain the power of epigenetics, which studies the factors that determine how much or whether some genes are expressed...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 09:29 Rating: 4.983575 Views: 199663   Tags: epigenetics  scishow  hank green DNA  genome  twins  clone  heredity  epigenome  histone  methyl groups norrbotten  sweden  environment

Caffeine!

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Hank delves into the details about that very popular substance: caffeine. Like SciShow on Facebook: www.facebook.com Follow SciShow on Twitter: www.twitter.com References for this episode...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 04:31 Rating: 4.9716444 Views: 135382   Tags: science  chemistry  scishow  caffeine  alkaloid  energy  coffee  tea  yerba mate  guarana  coca cola  coke  kola nut  adenosine  brain chemistry  addictive  addiction  dependence  habit  habit-forming  drug

Marie Curie: Great Minds

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Hank tells us the story of his favorite genius lady scientist and radioactive superhero, Marie Curie. Like SciShow on Facebook: www.facebook.com Follow SciShow on Twitter:...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 09:43 Rating: 4.9856973 Views: 101791   Tags: marie curie  marie sklodowska  scishow  science  physics  chemistry  education  great minds  radioactivity  radioactive  radiation  nobel prize  superhero  warsaw  poland  university  pierre curie  france  uranium  becquerel  electricity  polonium  radium  atom  toxic  cancer  sorbonne  leukemia  pantheon

Climate Change

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In which Hank details the five scariest things that will likely happen because of climate change. Follow SciShow on Twitter: www.twitter.com Like SciShow on Facebook:...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 10:52 Rating: 4.724979 Views: 176197   Tags: infusion  climate change  global warming  global climate change  carbon dioxide  carbon sink  greenhouse gases  methane  famine  displacement  mass extinction  sea level rise  polar ice cap  ecosystem  ocean acidification  global conveyor belt  thermohaline circulation  scishow  science

How Weed Works: THC

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Hank explains the science behind the effects of that wackiest of weeds, cannabis sativa - aka marijuana. Like SciShow on Facebook: www.facebook.com Follow SciShow on...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 04:25 Rating: 4.958288 Views: 188180   Tags: cannabis  cannabis sativa  thc  tetrahydrocannabinol  marijuana  weed  pot  science  biology  chemistry  cannabinoid receptors  brain chemistry  neurotransmitter  nerve cell  forgetting  memory  pleasure  cannabinoid  brain  drug  neuron  chemical  molecule  michael pollan  UV radiation  antibiotic  antibacterial  hemp  leaf-eating insect  animal  scishow  hank green

The Science of Overpopulation

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Hank talks about the issues of rising global population. Like SciShow on Facebook: www.facebook.com Follow SciShow on Twitter: www.twitter.com References for this episode can be...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 10:18 Rating: 4.9468746 Views: 170836   Tags: scishow  science  earth  world  population  billion  malthus  exponential growth  famine  disease  war  industrial revolution  fresh water  food  wealth  wealthy  developed  developing  youth bulge  social science  revolution  species  extinction  global population  infusion

Obesity

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Hank tells us some of the surprising things that could be causing or contributing to the obesity epidemic. Like SciShow on Facebook: www.facebook.com Follow SciShow...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 11:59 Rating: 4.966802 Views: 195822   Tags: scishow  science  obesity  health  united states  america  hank green  diet  dieting  exercise  corndog  ryan gosling  fat  overweight  obese  mississippi  health food  industry  heart disease  cancer  type ii diabetes  calorie  sleep  sleep deprivation  climate control  cigarette  industrial chemical  resin  solvent  perfume  dye  pesticide  your mom  epigenetics  gut bacteria  symbiotic ecosystem  fecal transplant

Non-Newtonian Fluids & A Bulletproof Hoodie

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Hank describes how non-Newtonian fluids can save lives - and dreams of a bulletproof hoodie. Follow us on Twitter: twitter.com Like SciShow on Facebook: www.facebook.com...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 03:32 Rating: 4.9196124 Views: 309580   Tags: non-newtonian fluid  isaac newton  newton  physics  apple  oobleck  dr. seuss  theodor geisel  cornstarch  bulletproof vest  viscosity  shear  particle  body armor  kevlar  silica  dose  scishow  hank green

IDTIMWYTIM: Schrodinger's Cat

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"I Don't Think It Means What You Think It Means" examines scientific theories that have taken on a life of their own in popular culture...   Uploaded: November 30, 1999 at 12:00 am Author: scishow   Length: 03:53 Rating: 4.975544 Views: 108588   Tags: schrodinger  schrodinger's cat  physics  physicist  austria  einstein  newtonian physics  quantum mechanics  subatomic particles  superposition  thought experiment  observation  zombie  alive  dead  many worlds  alternate universe  universe  science fiction  theory  theoretical  radioactive  radiation  geiger counter