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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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Design and fashion
Gear up for a stylish celebration of vintage motorcycle design
An ode to the humble rotifer – one of nature’s simplest and strangest creatures
Check in to the Hilbert Hotel, and learn why some infinities are bigger than others
Cognition and intelligence
How a ‘periodic table’ of animal intelligence could help to root out human bias
The city as an emergent life form, with architecture as the skeleton and roads as veins
How sky-high dreams launched one man’s audacious life in homemade rocketry
Earth science and climate
How much can science really tell us about the future of climate change?
War and peace
What happens when pacifist soldiers search for peace in a war video game