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River </a> </h3> <p class="article-dek">Could the waterway that the city was built around make a comeback?</p> <p class="author"> <a href='/author/darren-orf/'>Darren Orf</a> </p> </div> </div> <div class="article-list-item"> <div class="article-list-text"> <a href="/science-nature/how-to-make-a-mammal-in-nine-evolutionary-steps-180985289/"> <img loading="lazy" src="https://th-thumbnailer.cdn-si-edu.com/TwU04w7r6Uv3Z9EZyHW4l-lcXh8=/400x300/filters:no_upscale():focal(700x527:701x528)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/d1/82/d18228f6-d319-4525-bb18-78b829f0791f/mammalevolution_web.jpg" alt="By examining the fossils of ancient creatures, scientists are able to see the origins of features that make mammals different from other animals." width="400" height="300" /> </a> <h3> <a href="/science-nature/how-to-make-a-mammal-in-nine-evolutionary-steps-180985289/"> How to Make a Mammal in Nine Evolutionary Steps </a> </h3> </div> </div> <div class="article-list-item"> <div class="article-list-text"> <a href="/science-nature/the-six-most-amazing-discoveries-weve-made-about-neptune-180985333/"> <img loading="lazy" src="https://th-thumbnailer.cdn-si-edu.com/odg4qSB-FVqq2FnRXR2Td99Me0I=/400x300/filters:no_upscale():focal(800x602:801x603)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/9b/18/9b18984c-3b32-454b-805f-ea596a685f96/main_web_neptune_voyager2_color_calibrated.jpg" alt="A photo of Neptune, taken by the Voyager 2 probe, with the colors rebalanced to represent its truest appearance" width="400" height="300" /> </a> <h3> <a href="/science-nature/the-six-most-amazing-discoveries-weve-made-about-neptune-180985333/"> The Six Most Amazing Discoveries We’ve Made About Neptune </a> </h3> </div> </div> <div class="article-list-item"> <div class="article-list-text"> <a href="/smart-news/new-3d-bioprinter-could-build-replicas-of-human-organs-offering-a-boost-for-drug-discovery-180985460/"> <img loading="lazy" src="https://th-thumbnailer.cdn-si-edu.com/oEcN99jhK0NpFqDY2GWseKKVGOQ=/400x300/filters:no_upscale():focal(400x269:401x270)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/d9/ab/d9ab6f7f-d9b7-46d1-aba3-622d5dabafec/large.jpg" alt="The 3D bioprinter at the Collins BioMicrosystems Laboratory at the University of Melbourne." width="400" height="300" /> </a> <h3> <a href="/smart-news/new-3d-bioprinter-could-build-replicas-of-human-organs-offering-a-boost-for-drug-discovery-180985460/"> New 3D Bioprinter Could Build Replicas of Human Organs, Offering a Boost for Drug Discovery </a> </h3> </div> </div> <div class="article-list-item"> <div class="article-list-text"> <a href="/smart-news/a-35000-year-old-saber-toothed-kitten-was-unearthed-in-siberiaand-it-still-had-its-whiskers-and-claws-180985488/"> <img loading="lazy" src="https://th-thumbnailer.cdn-si-edu.com/uhLCvdDEN5IcK-bbAl7MLbpkAT8=/400x300/filters:no_upscale():focal(520x416:521x417)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/18/e1/18e1c208-d279-4193-8ca1-4f381730d932/41598_2024_79546_fig2_html_1.jpg" alt="The cub belongs to the species,&amp;nbsp;Homotherium latidens,&amp;nbsp;and was unearthed from the&amp;nbsp;Badyarikha River in Yakutia, Siberia." width="400" height="300" /> </a> <h3> <a href="/smart-news/a-35000-year-old-saber-toothed-kitten-was-unearthed-in-siberiaand-it-still-had-its-whiskers-and-claws-180985488/"> A 35,000-Year-Old Saber-Toothed Cub Was Unearthed in Siberia—and It Still Had Its Whiskers and Claws </a> </h3> </div> </div> </div> </div> <div class="home-newsletter"> <div class="leade"> <p>Get the latest Science stories from <em>Smithsonian</em> magazine in your inbox.</p> <form method="post" action="/acoustic/add_science/"> <input type="email" name="email" placeholder="Email Address" required="" id="id_email"> <input type="submit" value="Sign Up" name="submit" class="science" /> <p class="terms-info"><input type="checkbox" name="si_all_opt_subscribed" id="id_si_all_opt_subscribed"> By checking this box, I agree to receive other information from the Smithsonian, including relevant content and programming, news about Smithsonian events, trips and offers, and museum updates. <a href="/privacy">Click to visit our Privacy Statement</a>.<br /> Easy unsubscribe links are provided in every email.</p> <input type="hidden" name="science_opt_source" id="id_science_opt_source" value="Preference Center"> </form> </div> </div> </div> <div class="advertisement fullwidth"> <!-- BEGIN Freestar: Tag ID - smithsonianmag_leaderboard_btf --> <div align="center" data-freestar-ad="__336x280 __970x250" id="smithsonianmag_leaderboard_btf" class=""> <script data-cfasync="false" type="text/javascript"> freestar.config.enabled_slots.push({ placementName: "smithsonianmag_leaderboard_btf", slotId: "smithsonianmag_leaderboard_btf" }); 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