Humans

Humans, from the planet Earth, are the newest sentient species of notable size to enter the galactic stage and are hands-down the most rapidly expanding and developing. They independently discovered a Prothean data cache on Mars in 2148, and the mass relay networks shortly thereafter. Humans can live to about 150 years, and recent medical advances have eradicated almost all known diseases that afflict them. However, as humans only emerged on the galactic stage within the last thirty years, it is highly likely that the introduction of new technology into their society will greatly increase their average lifespan. Humans reach physical maturity at approximately eighteen years of age, at which point they have usually finished their academic education and either directly enter the workforce or begin training for a profession. It has been noted that humans are unusual in the galactic community because they have far greater genetic diversity compared to other species with more peaks and valleys. This makes human genetic material useful in biological experiments, as a control group.