Scientists find ancient giant viruses in Yellowstone's hot springs

Scientists have made an unbelievable finding in Yellowstone National Park: "giant" viruses that date back an astounding 1.5 billion years.

The word "giant" describes theirextraordinarily largegenomesin comparison toviruses that are more common.Despite theirname, they pose no threat to people.

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Rather, these giant viruses offerimportantinsights regardinga timewhen Earth's first single-cell creatures were beginning to appear.They aid intheunderstandingofthe conditions and mechanisms that shaped the earliest stages of life.

Through the examination ofancient viruses, scientists can enhance their comprehension of the evolutionary trajectory and environmental influences that molded the genesis of life onEarth.

The hot springs of Yellowstone are like living fossils—relics froma timewhen the planet was far harsher. These ancient viruses have survived for generations despite the severe circumstances in these settings, which include blistering temperatures, high pressures, and deadly elementssuch as arsenic.

The Lemonade Creek hot spring in Yellowstone, which reaches temperatures of around 111 degrees Fahrenheit, was the source ofDNA samples for analysis by the researchers. They discovered sequences of bacteria, algae, and archaea that supported an astounding 3,700 potential viruses, of which two-thirds were giantviruses.

To survive amid the heat and toxicity of these hot springs, the bacteria and archaea have been borrowing genes from one another for billions of years. The evolution and diversification of the viruses, made possible by this mechanism of gene exchange, are vital to the long-term stability of the hot spring ecosystems.

(With inputs from agencies)