"Life can only be understood backwards; but it must be lived forwards"

Søren Kierkegaard

Welcome! We are interested in the biology of early Earth and how understanding life’s emergence and early mechanisms may assist finding life beyond Earth. Our integrative approach enables the study of biomolecule-scale macroevolutionary trends that span billions of years of history and is a fundamentally new methodology with which to study the origins and early evolution of life. 


Latest research article (2020): Evolutionary stalling and a limit on the power of natural selection to improve a cellular module (PNAS)

Research article (2020): Reconstructed ancient nitrogenases suggest Mo-specific ancestry. (Geobiology)

Postdoc Mati Kadzior shares his research with the Finland-based Ferment Radio podcast: Microbial time traveling in the laboratory


Graduate student Cathryn Sephus wins the best poster award by the GSA Geobiology and Geomicrobiology Division. Her poster is titled: "Shedding light on phototrophic pigment evolution: reconstruction of ancestral rhodopsins".

Graduate student Katie McGrath wins the NASA Astrobiology Collaboration Award with her proposal titled: Exploring the evolution of bacterial translation machinery. 

John Templeton Foundation Researcher Profile: Q&A: Five Questions with Betül Kaçar


Brooke Carruthers explores the potential of space sciences education for developing critical thinking and inspiring students Read More >>>

Betul Kacar joins the UN Women Generation Equality Campaign Read More >>>


© 2020 Kacar Research Group

University of Arizona, 1007 E Lowell St, Tucson, AZ 85719

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