Scientists Discover Thriving Microbial Ecosystem Beneath Antarctica's Ross Ice Shelf

Exam-focused facts from the 21 May 2026 current affairs briefing.

Key facts

Researchers discovered a diverse community of microbes living in complete darkness hundreds of metres beneath the Ross Ice Shelf in Antarctica.
A 2022 study published in Nature Communications revealed that these microorganisms form a functioning ecosystem independent of sunlight through the process of chemosynthesis.
The dominant organisms in this subglacial cavity include aerobic lithoautotrophic archaea and bacteria that generate energy from ammonium, nitrite, and sulphur compounds.
Scientists utilised advanced molecular methods such as metagenomics and metatranscriptomics to study the taxonomic characteristics of these unique microbial communities.
The ecosystem also contains endemic viruses that regulate nutrient cycling and population dynamics by infecting chemolithoautotrophic microorganisms.