TED-Ed

Explore how alcohol interacts with your brain, andhow it can interrupt the brain's memory networks,leading to blackouts. Alcohol has been shown to have strange andselective effects on the brain. Many intoxicatedpeople can perform complex tasks like holding adetailed conversation or navigating a walk home.Yet for those experiencing a blackout, the memoryof these events is quickly forgotten. So, how doesalcohol cause these memory lapses? ShannonOdell explores how ethanol interrupts the brain'sprocesses.

Uncover the most common misperceptions aboutdodos, and find out the truth of how the flightlessbirds actually went extinct. Dodos are commonly considered brainless,blundering birds that were poorly adapted anddoomed to die off, making their humnan-mediatedextinction effortless and inevitable. But that's notthe case. So, what were dodos actually like? Andwhat really caused their downfall? Leon Claessensuncovers the truth about these misunderstoodand maligned creatures. Lesson by Leon Claessens, directed by DenysSpolitak.

Aphids can reproduce incredibly fast: they canmake 20 new generations within a single season.And that means lots of poop. Some aphidpopulations can produce hundreds of kilogramsof poop per acre- making them some of the mostprolific poopers on the planet. We know this poopas the sweet, syrupy liquid called honeydew.George Zaidan explores the wonderfully weird lifeof an aphid.

Explore a classic philosophical debate and decide:is it human nature to be selfish? And if so, is itpossible to overcome it? The question of whether or not humans areinherently selfish is one of philosophy's oldestdebates. The idea that we only act out ofself-interest is an extreme stance that fewphilosophers would endorse. However, the ideathat all humans have a deep selfish streak issomething many philosophers would agree with.So, are we innately selfish? Mark Hopwoodxplores this classic conundrum.

Explore how the offspring of parasitic butterfliestrick their way into ant colonies for food andprotection. X You might not guess it, but Alcon blue butterfliesare just one of over 200 parasitic butterfly species,all of which target ants. And their offspring livehighly unusual lives, tricking their way into antcolonies using mimicry. So, how do thesebutterflies do it- and why? Francesa Barbeexplores the strategies caterpillars use to surviveamong ants on their journey to becomebutterflies.

POSEIDON'SDILEMMA Dig into the monetary value of the ocean, fromglobal trade, to tourism, fishing, and more, asPoseidon contemplates selling it. Surveying his vast domain, Poseidon considersretirement. What if someone else donned the coracrown so he could spend his immortalityharmonizing with whales and cozying up tohydrothermal vents? Poseidon decides he needsto prioritize himself for once. So, he summons hisaccountant and asks: how much could he sell theocean for? Astrid J. Hsu conducts a financialanalysis of our oceans' worth.

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