Building on four billion years of innovation to develop new safeguards for biology.
Timeline of the four geological eons

Earth's history is divided into four eons.

In the first eon the planet was a barren wasteland, slowly forged from fire and stone. The second eon witnessed life's origin, the animation of matter. The third eon brought a great oxygenation event that drove the evolution of eukaryotes and multicellular life. The fourth eon began just half a billion years ago, and birthed an explosion of biological complexity that has completely reshaped the biosphere.

This is our eon, the fourth eon, the age of intelligence and awareness. We are the product of four billion years of biological innovation, of nature relentlessly solving problems to survive and adapt. We are still young, having just recently awoken. Yet we already face an existential test, as our technology poses growing risks to our own survival.

Will we thrive and expand beyond our home and throughout the stars? Or will we stumble and fade back into dust?

This is our eon, and our time to adapt, persist, and explore...

About

Fourth Eon Bio

Fourth Eon Bio is a research and development organization exploring capabilities, applications, and risks of AI bio models to advance global biosecurity and build robust safeguards.

Research

Protein design

Exploring the limits of AI protein design

Biological foundation models and biodesign tools are transforming our ability to create novel proteins and pushing the boundaries of synthetic biology. They also pose new challenges for biosecurity due to the potential for engineering dangerous functions.

Fourth Eon Bio is evaluating AI-enabled protein design in the context of biosecurity screening, and seeking to understand the capabilities of current models in generating novel proteins that could challenge existing safeguards.

Functional sequence screening

Predicting hazardous function from sequence

DNA sequences encode a highly compressed representation of biological function, which is executed by the cellular environment through the processes of molecular biology. Screening sequences for hazardous functions has traditionally relied on homology to known genes and proteins, but this approach is being strained as synthetic biology pushes beyond the space explored by nature.

Biological foundation models can learn a rich and nuanced representation of biomolecules by mapping their sequence-structure-function relationships to a high-dimensional embedding space. Fourth Eon Bio is evaluating foundation model capabilities for predicting structure, binding, function, and other molecular properties directly from sequence, and exploring how this could be used for detecting biological threats that do not closely resemble anything found in nature.

People

Gary Abel

Gary Abel — Founder & Principal Scientist

Gary is Principal Scientist at Fourth Eon Bio, and a Contributing Scholar at the Johns Hopkins Center for Health Security. His expertise includes biochemistry, molecular biophysics, surface science, and sequencing technology. He has spent nearly two decades studying how DNA, RNA, and proteins behave and interact. Gary holds a BS in Physics from San Jose State University and a PhD in Chemistry & Chemical Biology from University of California Merced.

Career profile     |     Publications     |     Patents    |     Contact

Elias Nehring

Elias Nehring — Research Fellow

Elias recently completed his MSc in Computational Biology and Bioinformatics from ETH Zürich, where he specialized in ML for protein design. He is interested in AI capabilities and biosecurity risk. He has contributed to publications on LLM risks in agriculture and computational methods in ecology. Previously, he worked at McKinsey on geospatial analytics and generative AI for agriculture.

Hanna Palya

Hanna Pálya — Research Fellow

Hanna Pálya is a PhD student in Mathematical Epidemiology at the University of Warwick, applying ML to syndromic surveillance data for early outbreak detection with the UK Health Security Agency. Beyond this, their biosecurity work includes co-developing an AI Know-Your-Customer tool for DNA providers, scoping a research programme for function-based screening of nucleic acid sequences with the Centre for Long-Term Resilience, and AI-bio threat modelling as a GovAI Winter Fellow. They hold a BSc in Biology and Philosophy from the University of St Andrews.

Ian Beatty

Ian Beatty — Research Fellow

Ian Beatty is a Physics Professor at the University of North Carolina Greensboro, with experience in Physics Education Research and Computational Physics. Driven by a desire to make the world safer, he's diving into the AI-biosecurity nexus, trying to reduce catastrophic pandemic risk by improving DNA synthesis screening methods. Ian holds a PhD in Physics from University of Massachusetts Amherst.