Why are tattoos permanent?

Could a cheaper, more environmentally friendly refrigerant already exist, and could corporate lobbying be helping keep it out of American air conditioners? Why did the chemicals once hailed as safe alternatives become environmental villains, and are their replacements actually mu ...  Afficher plus

What happens when a chemist ventures onto Reddit to answer the internet’s most pressing science questions? Why does carbon get its own entire branch of chemistry, what makes fireworks burn different colors, and can an invention work even when its inventor has no idea why? Melissa ...  Afficher plus

On today’s episode: How do sharks swim so fast? Denticles! How do tattoos work? And how safe are they? Hybrid swarms are causing extinctions… and we’re one of them! Why do we play? All that and more today on All Around Science...

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“As ancient as time, as modern as tomorrow.’Why have tattoos been reinvented in so many cultures - and with so many different meanings - throughout history?And yet, tattooing is constantly portrayed as a new ‘thing’, when tattoos were just for criminals or sailors.Far from truth, ...  Afficher plus

Greg and Bella are joined by award-winning Biology teacher Miss Wilsher for a lesson all about tattoos!By looking at how a tattoo works, we'll find out about the different layers of your skin and how pain works; we'll also hear about the chequered history of tattooing and it's an ...  Afficher plus

Body art...tattoos...are pretty ubiquitous these days. But where did it all start…and why? The first documented evidence of tattooing goes back over 5,000 years. But why did they do it? It’s not what you think. See omnystudio.com/listener for privacy information.