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</html><description>Lees hier het pdf&#xA0;van dit artikel. Door Wouter Koolmees Waarom is de ene mens solidair met de andere? Het schijnt dat dolfijnen zieke of gewonde soortgenoten naar de oppervlakte helpen om adem te halen. Zou solidariteit evolutionair voordelig zijn? Een groep is sterker dan de optelsom van individuen, dus solidair gedrag wordt misschien wel beloond. [&hellip;]</description><thumbnail_url>https://d66.nl/vanmierlostichting/wp-content/uploads/sites/4/2021/05/Mr-Hans-van-Mierlo-stichting-logo.png</thumbnail_url><thumbnail_width>1920</thumbnail_width><thumbnail_height>1080</thumbnail_height></oembed>
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