L.G. Kleina

Papers

Total Citations

231

H-Index

About

Dr. L.G. Kleina is a pioneering astrobiologist whose work has fundamentally shaped our understanding of life in extreme subsurface environments. Her primary research focuses on cave biosignatures, planetary protection, and the search for life on Mars. Kleina’s most celebrated contribution is her landmark 2001 paper, "Cave Biosignature Suites: Microbes, Minerals, and Mars," which has garnered over 230 citations and established the theoretical framework for identifying microbial life through its mineralogical fingerprints in subterranean settings. This work demonstrated that caves and subsurface voids on Earth serve as ideal analog sites for Mars, where harsh surface conditions make the underground the most promising habitat for extant or fossil life. By linking specific microbial metabolisms to characteristic mineral formations, Kleina provided a practical toolkit for future Mars missions. Her research has been instrumental in shaping NASA’s exploration strategies, emphasizing that the Martian subsurface may hold the key to answering humanity’s oldest question. For her contributions, Kleina has been recognized as a leading voice in astrobiology, inspiring a generation of researchers to look beneath the surface.