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As ground-based and space telescopes improve, astronomers need a color-coded guide to compare Earth’s biological microbes to cold, distant exoplanets to grasp their composition.
Thomas Brock, Whose Discovery Paved the Way for PCR Tests, Dies at 94 In 1966, he found heat-resistant bacteria in a hot spring at Yellowstone National Park. That led to the development of the chemical process behind the test for Covid-19. Thomas Brock in 1992 at a hot spring in Yellowstone National Park. It was there, 26 years earlier, that he found Thermus aquaticus, a species of bacteria that would be used to develop the chemical process behind PCR testing for the coronavirus.Credit...Peter Menzel/Menzelphoto April 22, 2021, 4:29 p.m. ET Thomas Brock, a microbiologist, was driving west to ...