Thomas Brock discovers Thermus aquaticus in Yellowstone (1969)
Microbiologist Thomas Brock isolated a bacterium from a Yellowstone hot spring that could grow at 70°C, far above what was then thought possible for life. The species, Thermus aquaticus, became the source of Taq polymerase, the heat-stable enzyme that made the polymerase chain reaction (PCR) possible.
The discovery expanded the known temperature range of life and opened the field of thermophile research.
Taq polymerase from T. aquaticus became a cornerstone of molecular biology, enabling PCR and earning a Nobel Prize for Kary Mullis in 1993.
Like Brock's discovery, I. cascadensis expands the known limits of life and offers thermostable proteins with potential biotech applications.
