This document discusses race as a biological concept and summarizes the history of how race was categorized scientifically. It notes that while early scientists like Linnaeus and Blumenbach attempted to categorize humans into racial subspecies based on physical attributes and geography, modern genetics shows that all humans are one species with a high degree of variation. The concept of race as a distinct biological category is an outdated social construct not supported by science, as humans cannot be clearly or consistently delineated into subspecies and meet the accepted criteria for subspecies classification.