Twelve recent studies showcase how viruses affect humans and other organisms all across the globe.
Viruses have been a near-constant subject of headline news in recent years, especially since the COVID-19 pandemic began. But of course, the pathogens' influence stretches back to the start of human history and beyond — in fact, viruses have had a hand in shaping the trajectory of all life on Earth. In 2022, these 13"viral" stories highlighted just a few ways the pathogens affect the human body and the world at large.
3. Viruses named for Norse gods Scientists uncovered the genetic traces of a mysterious group of viruses that can infect Asgard archaea, ancient microbes that existed on Earth prior to the first complex cells. These viruses, named after figures in Norse mythology, may have influenced the rise of complex life on Earth, in part, by supplying a precursor to the nucleus that now carries DNA in complex cells.
6. Viruses slay superbugs Viruses that infect bacteria, or"bacteriophages," can make antibiotics more effective, clearing away drug-resistant superbugs that would otherwise defy treatment. In one fascinating case, doctors cultured viruses in lab dishes alongside a bacterial superbug and then selected the best killer from the bunch. They then unleashed that selected virus into a woman's chronic infection, helping to finally cure it.
9. Ocean viruses may affect flow of carbon through the ecosystem Thousands of RNA viruses recently discovered in the world's oceans infect a wide variety of hosts, including fungi, algae, amoebas and even some invertebrates. By infecting organisms that pull carbon dioxide out of the atmosphere, these mysterious viruses may influence how carbon flows through the ocean at large, scientists say.
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