https://www.smithsonianmag.com/rss/tag/sex/RSS feed for SexenMon, 20 Jul 2026 15:00:00 +0000https://www.smithsonianmag.com/smart-news/koalas-are-at-risk-of-extinction-in-some-parts-of-australia-can-freezing-their-sperm-and-eggs-help-save-the-iconic-marsupials-180989147/Scientists are preserving the animals' reproductive cells in liquid nitrogen in a bid to boost genetic diversity in future populationsMon, 20 Jul 2026 15:00:00 +0000https://www.smithsonianmag.com/smart-news/koalas-are-at-risk-of-extinction-in-some-parts-of-australia-can-freezing-their-sperm-and-eggs-help-save-the-iconic-marsupials-180989147/