99.999 Percent Of Earth's 1 Trillion Microbial Species Remain Undiscovered: Scientists There could be a substantial 1 trillion microbial species on Earth, but 99.999 percent probably remain undiscovered. Scientists face a herculean task ahead as they try to identify every single one of them. by Katrina Pascual
Science Iceland Becomes World's Largest Genetic Laboratory: Here's What We Can Learn From Icelanders' DNA by Jim Algar