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If you are like most people, there is a gap between the person you are and the person you wish to be. There are little things you think you should do and big things you ought to achieve.

From working out regularly, eating healthy, learning a language, working on your novel, reading more or simply actually doing your hobby instead of browsing reddit.

But it can seem that to achieve your goals, you have to become a different person. Someone who is consistent, puts in more effort, has discipline and willpower. Maybe you have tried your hardest to be like that. And it worked! For a while. Until you find yourself slipping back into your old ways. In the end, you always seem to fail. And with every failed attempt, you become more and more frustrated and annoyed with yourself.

If you believe “success and hustle” internet, it is all your own fault: if you don't succeed, you just didn’t want it enough and the failure is all you. But change is actually hard. But as with most things in life, understanding why makes things easier.

Sources & further reading: https://sites.google.com/view/sources-change/

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Life has existed on one planet for about 4 billion years, for all we know. But it might have started right after the Big Bang, when the universe was much stranger and more fantastic than today. A universe that might have allowed life to develop absolutely anywhere. The cosmos might be full of the seeds of life, sleeping in a dead desert, waiting for a few drops of rain to explosively bloom and grow. Tiny and not so tiny aliens might be everywhere.

Sources & further reading: https://sites.google.com/view/sources-big-bang-life/

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The Universe is incredibly big and seems full of potential for life, with billions of habitable planets. If an advanced civilization had the technology to travel between the stars, at just 0.1% of the speed of light, It could colonize our galaxy in roughly 100 million years. Which is not that long given the billions of years the Milky Way has existed – so in principle any spacefaring civilization should be able to spread rapidly over huge sectors of the galaxy. And yet we see nothing, hear nothing, the universe seems empty. Devoid of others. This is the Fermi Paradox, which we have discussed in more detail in other videos.

Confronted with the seemingly empty universe, humanity faces a dilemma. We desperately want to know if we are alone in the Milky Way. We want to call out and reveal ourselves to anyone watching but that could be the last thing we ever do. Because maybe the universe is not empty. Maybe it’s full of civilizations but they are hiding from each other. Maybe the civilizations that attracted attention in the past were wiped away by invisible arrows. This is the Dark Forest solution to the Fermi paradox.

Sources & further reading: https://sites.google.com/view/sources-darkforest/

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Never before in human history have we been richer, more advanced or powerful. And yet we feel overwhelmed in the face of rapid climate change. It seems simple on the surface. Greenhouse gases trap energy from the Sun and transfer it to our atmosphere. This leads to warmer winters, harsher summers. Dry places become drier and wet places wetter. Countless ecosystems will die while the rising oceans swallow coasts and the cities we build on them.

So why don’t we just like… prevent all of that? Well, it’s complicated.

Sources & further reading: https://sites.google.com/view/sources-climate-how/

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Sources & further reading: https://sites.google.com/view/sources-tattoo-inside/ Your tattoos are inside your immune system, literally. With each very tasteful piece of art, you kick start a drama with millions of deaths, grand sacrifices, and your immune system stepping in to protect you from yourself. Let us get under your skin with our newest episode.

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Could aliens destroy us from light-years away? Another day at Kurzgesagt Labs, where we answer the most important questions with science. Today: how might civilizations wage war across light years? What kind of devastating weapons could they use and what would they look like?

Sources & further reading: https://sites.google.com/view/sources-interstellarwar/

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Somewhere in your body, your immune system just quietly killed one of your own cells, stopping it from becoming cancer, and saving your life. It does that all the time. The vast majority of cancer cells you develop will be killed without you ever noticing. Which is an incredibly hard job because of what cancer cells are: parts of yourself that start to behave as individuals even if it hurts you.

What is cancer and how does your body kill it all the time?

Sources & further reading: https://sites.google.com/view/sources...

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The Brain Eating Amoeba

A war has been going on for billions of years that breeds well armed monsters who struggle with other monsters for survival. Having no particular interest in us, most of them are relatively harmless, as our immune systems deal with their weapons handily. But there are exceptions.

Naegleria fowleri is an amoeba that not only has developed a deadly taste for human brains but is also a match for our defenses and a guest in dramatic headlines. What happens when this monster enters your body?

Sources & further reading: https://sites.google.com/view/sources-brain-eater/

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Look around you. Where are you? Where is this place you are occupying? Somewhere in a room, maybe in a city on a continent on a planet orbiting a star in a galaxy among billions. But… where is all of that? While this may feel like a daft question, it turns out that the concept of an absolute position is something humans made up.

In a nutshell, the universe is a big bag of space that has things in it. If someone removed all these things, the stars and planets and black holes and dust, there would just be empty space left. In empty space, the concept of having a position loses all meaning. Empty space is uniform, the same everywhere.

Sources & further reading: https://sites.google.com/view/sources-jiggle-of-existence

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The future of humanity seems insecure. Rapid climate change, political division, our greed and failings make it hard to look at our species with a lot of optimism and so many people think our end is in sight. But humans always thought they lived in the end times. Every generation assumes they’re important enough to witness the apocalypse and then life just goes on.

This is a problem because it leads to short term thinking and prevents us from creating the best world for ourselves and our descendants. What makes this worse is that we actually may live at an extremely critical moment in human history. To understand why, let us look at the temporal window of humanity and ask:

When will the last human be born and how many people will there ever be?

Sources & further reading: https://sites.google.com/view/sources-last-human/

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