The Deadliest Toxins on Earth

There are naturally occurring toxins on Earth that are SO poisonous that one drop could kill thousands of people. How is that possible? What about their chemical makeup makes them so poisonous? Join Hank Green for an exciting look into the dangerous world of natural toxins.

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[nazibkhan]

Well, after being told so many times that infants can't eat honey while never being given a proper explanation, now I know why. Thanks Hank

[Karagianis]

Something I learned at University is that EVERYTHING is toxic, it's all a question of dosage.

[MrMalformedllama]

God I love humans, "let's take the most deadly, life-threatening bacteria that exists as far as we know, and use it as a beauty product!"

[vivienleigh]

I'm Swedish and every year (well last year was an exception) people from Thailand come to Sweden to pick blue berries for profit. The problem is that one of our most poisonous mushrooms is very easily mistaken for a mushroom that grows in Thailand - that is edible. Within three days after eating our mushroom the liver stops functioning.

[NumPad]

Another contributing factor to why the Death Cap is so deadly is that, according to people who've eaten them and survived, it tastes kind of sweet therefore causing the victim to eat more of them and ingesting even higher quantities of the poison.

[thanguy]

The mitochondria is the powerhouse of the cell.

[boopbiffsnose]

The cat sitting on the desk with me as I watch this was named Amanita as a kitten. Her sister was named Pantherina, and together, they were the vet's favorite toxic mushroom, the panther cap.

[meriemlarbi]

Scishow: babies under 12 months should never eat honey
MY mom: i fed u honey on the day u were born

[anichka]

Most if the time, half of what he's saying is stuff I don't know much about. Yet, I always end up watching SciShow when I'm bored...

[revachxl]

I just love how he tells all the killing stuff with a smiling face.

[sirdrell]

Making the thumbnail honey definitely made me click lol

[koukouland]

Thank you for starting with Markov! My mum is Bulgarian. The infamous Bulgarian umbrella! I was in a theatre in London once and I was asked to leave my umbrella out and I joked that they shouldn't worry because it's not Bulgarian...they didn't think it was funny!
But seriously, he was an amazing guy, a hero in my eyes!

[jarius]

"Tests on sad pigeons"

Oh, the world seems in tune on a spring afternoon...

[LorcanG]

Love the way these youtube channels don't clickbait

[CriticalSystemCrisis]

"Is that an umbrella!?" That made me laugh. Very informative video, thank you.

[windyworm]

We were always told "you can eat any fungi, at least once"!

[garynorthtruro]

Must have taken many lives, over time, to find the 'safe' mushroom.

[ellam.m]

God, I love botulinum. I had to research it for a school project YEARS ago and I'm absolutely fascinated me. IT's just so amazingly (and terrifyingly) cool to me!

[IdleDrifter]

Mushrooms got some of the cooler if not more badass sounding names. Death Cap. Destroying Angel.

[Orwic]

As a scientist, one of my interests is in toxicology. I once attended a research meeting where one of the presenters gave a talk on ricin, and showed photographs of the pellet from the ‘umbrella gun’ and the tiny holes bored in it that were filled with ricin. A very interesting talk!