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If the competitive nature of existence ever gets you down, you might want to consider one leading theory of how complex life came to emerge in the first place. The endosymbiotic theory of mitochondrial origin (also known as symbiogenesis) is one of the leading theories for the development of eukaryotes – the nucleus-containing cells that are the building blocks of all multicellular organisms. According to the theory, narrated here by the biologist Rob Lue of Harvard University, it was a symbiotic partnership between two primitive cells that allowed them to thrive, develop organelles for specialised tasks, and eventually give rise to complex new lifeforms. In other words, cooperation was key – and it remains so today.
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Engineering
A close-up look at electronic paper reveals its exquisite patterns – and limitations
9 minutes
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Cognition and intelligence
What’s this buzz about bees having culture? Inside a groundbreaking experiment
8 minutes
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Earth science and climate
The only man permitted in Bhutan’s sacred mountains chronicles humanity’s impact
22 minutes
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Cosmology
The Indian astronomer whose innovative work on black holes was mocked at Cambridge
13 minutes
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Astronomy
Seven years later, what can we make of our first confirmed interstellar visitor?
59 minutes
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Physics
Is it possible to design a shape to roll along any fixed path?
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Biotechnology
The two women behind a world-changing scientific discovery
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Medicine
Why surgery and barbering were one occupation in the Middle Ages
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Space exploration
Mind-bending speed is the only way to reach the stars – here are three ways to do it
5 minutes