What is a microbe? Microbes are(single-cell organisms so tiny that millions can fit into the eye of a needle They are the oldest form of life on earth Microbe fossils date back more than 3.5 billion years to a time when the Earth was covered with oceans that regularly reached the boiling point, hundreds of millions of years before dinosaurs roamed the eal arth Without microbes we couldnt eat or breathe Without us, theyd probably be just fine Understanding microbes is vital to understanding the past and the future of ourselves and our planet WORLD w.microbeworld orgWhat is a Microbe? ▪ Microbes are (single-)cell organisms so tiny that millions can fit into the eye of a needle. ▪ They are the oldest form of life on earth. Microbe fossils date back more than 3.5 billion years to a time when the Earth was covered with oceans that regularly reached the boiling point, hundreds of millions of years before dinosaurs roamed the earth. ▪ Without microbes, we couldn’t eat or breathe. ▪ Without us, they’d probably be just fine. ▪ Understanding microbes is vital to understanding the past and the future of ourselves and our planet