mitos da Katana + conheça o Ramayana + o dilema do ar condicionado + progresso tem dois gumes?

Why Katana are Made from Crappy Steel https://youtube.com/shorts/BYdbStLBNk0?feature=share

Let’s ask Seki Sensei | Kobudo Asayama Ichiden Ryu https://www.youtube.com/@letsasksekisensei

The earliest modern humans in Europe mastered bow-and-arrow technology 54,000 years ago https://theconversation.com/the-earliest-modern-humans-in-europe-mastered-bow-and-arrow-technology-54-000-years-ago-200609

The Forgotten Roman Temple Buried Beneath London | Time Team | Odyssey https://youtu.be/eZetpzFizzQ

Throwing a Pilum – How far can a Pro throw? https://youtu.be/RLmNQLZgdew

The Sharpest Object In The World Can’t Cut Anything https://youtu.be/LK5cPn6eGbc

Could waste plastic become a useful fuel source? https://www.bbc.co.uk/news/business-64703976

There are 21,000 pieces of plastic in the ocean for each person on Earth https://www.washingtonpost.com/climate-environment/2023/03/08/ocean-plastics-pollution-study/

Can We Solve the Air Conditioning Paradox? https://youtu.be/DlGQDGR1FFk

The Ramayana https://www.bbc.co.uk/sounds/play/m001jst2

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