In this episode: <h2>00:15 An appearing, disappearing tattoo ink</h2>Nature: <a href="https://www.nature.com/articles/d41586-026-03210-z" rel="noopener noreferrer" target="_blank">Watch this invisible tattoo appear under UV light</a> <h2>04:13 How the epigenome could help explain why big dogs age faster</h2>Nature: <a href="https://www.nature.com/articles/d41586-026-03199-5" rel="noopener noreferrer" target="_blank">Big dogs age faster than little ones — rogue ‘jumping genes’ might be to blame</a> <a href="https://www.nature.com/briefing/signup" rel="noopener noreferrer" target="_blank">Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.</a><hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

Briefing Chat: An invisible tattoo that appears under UV light – and then disappears

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