<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Microbes, Bacteria, Viruses | smithsonianmag.com</title><link>https://www.smithsonianmag.com/rss/tag/microbes-bacteria-viruses/</link><description>RSS feed for Microbes, Bacteria, Viruses</description><atom:link href="https://www.smithsonianmag.com/rss/tag/microbes-bacteria-viruses/" rel="self"/><language>en</language><lastBuildDate>Mon, 18 May 2026 19:16:20 +0000</lastBuildDate><item><title>The Ebola Outbreak in Africa Was Declared a Global Health Emergency by the WHO. Here's What to Know About the Rare but Severe Illness</title><link>https://www.smithsonianmag.com/smart-news/the-ebola-outbreak-in-africa-was-declared-a-global-health-emergency-by-the-who-heres-what-to-know-about-the-rare-but-severe-illness-180988758/</link><description>The international health agency notes that the outbreak does not meet the criteria for a pandemic, and the U.S. Centers for Disease Control and Prevention says that the risk to the American public is low</description><pubDate>Mon, 18 May 2026 19:16:20 +0000</pubDate><guid>https://www.smithsonianmag.com/smart-news/the-ebola-outbreak-in-africa-was-declared-a-global-health-emergency-by-the-who-heres-what-to-know-about-the-rare-but-severe-illness-180988758/</guid><enclosure length="4561664" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/JcA6mvCAj8_PQVrvl1_Oc9_wUtw=/420x240/filters:focal(1800x1200:1801x1201)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/a1/fc/a1fc3e5f-60ab-49ea-829b-aff455639026/ebola-outbreak2.jpg"/></item><item><title>This Microscopic Fungus Survived NASA's Sterilization Protocols—and Is Potentially Hardy Enough to Contaminate Mars</title><link>https://www.smithsonianmag.com/smart-news/this-microscopic-fungus-survived-nasas-sterilization-protocols-and-is-hardy-enough-to-potentially-contaminate-mars-180988728/</link><description>The microbe was gathered from the agency's clean rooms, where experts build spacecraft in carefully controlled environments. The findings reveal gaps in the agency's procedures to prevent durable hitchhikers</description><pubDate>Wed, 13 May 2026 18:57:59 +0000</pubDate><guid>https://www.smithsonianmag.com/smart-news/this-microscopic-fungus-survived-nasas-sterilization-protocols-and-is-hardy-enough-to-potentially-contaminate-mars-180988728/</guid><enclosure length="1800439" type="image/png" url="https://th-thumbnailer.cdn-si-edu.com/zUV2BFie3SAApdGyueQ00yueym4=/420x240/filters:focal(750x500:751x501)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/37/04/3704addd-546e-4b15-a057-3a29901bf7c1/nasa_clean_room.png"/></item><item><title>Why Do Cows Burp Up So Much Planet-Warming Methane? A Newly Discovered Structure in Their Gut Microbes Could Be a Culprit</title><link>https://www.smithsonianmag.com/smart-news/why-do-cows-burp-up-so-much-planet-warming-methane-a-newly-discovered-structure-in-their-gut-microbes-could-be-a-culprit-180988664/</link><description>The "hydrogenobody" is an organelle inside certain microorganisms that live in a special stomach chamber in cattle, sheep and goats, according to a new study</description><pubDate>Mon, 04 May 2026 16:02:09 +0000</pubDate><guid>https://www.smithsonianmag.com/smart-news/why-do-cows-burp-up-so-much-planet-warming-methane-a-newly-discovered-structure-in-their-gut-microbes-could-be-a-culprit-180988664/</guid><enclosure length="16003542" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/o_54LCKQgqjn2nWYsd7GjX5SzP0=/420x240/filters:focal(2750x1833:2751x1834)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/05/5d/055dab9b-ab15-4618-ad98-320b7f2d92e3/cow-burps.jpg"/></item></channel></rss>