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Finding alien life on a distant planet would be amazing news - or would it? If we are not the only intelligent life in the universe, this probably means our days are numbered and doom is certain.

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One of the key players of our immune system is the complement system. An army of millions and trillions of tiny bombs, which work together in a complex and elegant dance to stop intruders in your body.

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

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Sometimes the world feels boring. All the remote islands are visited, the arctic conquered, the dense jungles discovered. Except, there is still a place to explore: A wet deadly desert where mysterious creatures live in total darkness: The deep sea. Let us dive down.

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

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66 million years ago, maybe on a Tuesday afternoon, life was the same as it had been the day before or a thousand years before or pretty much a million years before. Things were good for our feathered dinosaur buddies. Until a tiny, tiny detail in the sky changed.

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

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Follow the show to join us in this audio experience of Kurzgesagt - In a Nutshell.

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In and out, in and out. Staying alive is about doing things. This very second, your cells are combusting glucose molecules with oxygen to make energy available, which keeps you alive for another precious moment. To get the oxygen to your cells you are breathing.

Breathing is an answer to a very hard problem: How do you get the resources that your cells need to survive, from the outside, to the inside of your cells? Every living thing has to solve this problem and the solution is surprisingly different depending on one of the most important regulators of life: Size.

Sources & further reading: https://sites.google.com/view/sourceslifeandsize3

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Wrapping your mind around your life is pretty hard, because you are up to your neck in it. It's like trying to understand the ocean while learning how to swim. On most days you are busy just keeping your head above water. So it is not easy to figure out what to do with your life and how to spend your time.

There are a million distractions. Your family, friends and romantic partners, boring work, and exciting projects. Video games to play and books to read. And then there is your couch that somebody needs to lie on. It’s easy to get lost. So let us take a step back and take a look at your life from the outside.

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

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Since the Industrial Revolution, humans have released over 1.5 trillion tonnes of carbon dioxide or CO2 into the earth's atmosphere. In the year 2019 we were still pumping out around 37 billion more. That’s 50% more than the year 2000 and almost three times as much as 50 years ago. And it’s not just CO2. We’re also pumping out growing volumes of other greenhouse gases such as methane and nitrous oxide. Combining all of our greenhouse gases, we’re emitting 51 billion tonnes of carbon dioxide equivalents each year.

And emissions keep rising – but they need to get down to 0!

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

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The night sky seems peaceful and orderly. But in reality, stars are careening through the galaxy at speeds of hundreds of thousands of kilometres per hour. Not bound by static formations but changing neighbourhoods constantly. Fortunately space is big, and so the stars of the Milky Way are very unlikely to hit us. Unfortunately, they don’t have to hit anything to make us have a really bad time on earth. And there are already stars starting to get very close

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

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Space travel is the most exciting adventure for humanity, but in an irony of history we may stop ourselves from going into space the more we do it. With every rocket launched we are creating a deadly trap for mankind.

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