<p><strong>Injectable fluid safely fills area in which blood clots can form, in animal trials — plus, strong evidence that an elusive form of diamond has been made in the lab.</strong></p><p><br></p><h2>00:47 A magnetic seal to stop clots forming in the heart</h2><p><em>Research Article :&nbsp;</em><a href="https://www.nature.com/articles/s41586-025-10091-1" rel="noopener noreferrer" target="_blank"><em>Wang et al.</em></a></p><p><em>News and Views:&nbsp;</em><a href="http://www.nature.com/articles/d41586-026-00375-5" rel="noopener noreferrer" target="_blank"><em>Magnetic fluid offers better seal in heart-plugging medical procedure</em></a></p><p><em>Video: </em><a href="https://www.youtube.com/watch?v=YkdzHEgYSzA" rel="noopener noreferrer" target="_blank"><em>Magnetic gel injected into the heart could stop strokes</em></a></p><p><br></p><h2>07:02 Research Highlights</h2><p><em>Nature:&nbsp;</em><a href="https://www.nature.com/articles/d41586-026-00514-y" rel="noopener noreferrer" target="_blank"><em>Sewage systems secretly waft pollution into the air</em></a></p><p><em>Nature:&nbsp;</em><a href="https://www.nature.com/articles/d41586-026-00517-9" rel="noopener noreferrer" target="_blank"><em>This ant species is composed of only queens — no workers or males</em></a></p><p><br></p><h2>11:31 Making hexagonal diamond</h2><p><em>Research Article:&nbsp;</em><a href="https://www.nature.com/articles/s41586-026-10212-4" rel="noopener noreferrer" target="_blank"><em>Lai et al.</em></a></p><br><p><a href="https://www.nature.com/briefing/signup" rel="noopener noreferrer" target="_blank"><strong><em>Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.</em></strong></a></p><hr><p style='color:grey; font-size:0.75em;'> 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.</p>