French scientists have revived a 48,500-year-old "zombie virus" buried under a frozen lake in Russia. Scientists have long warned that the thawing of permafrost due to atmospheric warming will worsen climate change by freeing previously trapped greenhouse gases like methane.

What is Zombie Virus and why is it dangerous? | 48,500-year-old Virus in Russia
Scientists revived a zombie virus that was buried in the Siberian permafrost for over 48,500 years