human-evolution

The non-avian dinosaurs went extinct approximately 66 million years ago. The earliest members of the genus Homo appeared roughly 2.8 million years ago. Modern Homo sapiens are at most 300,000 years old. The gap between the last non-avian dinosaur and the first human is 63 million years wide — wider than the entire span of the Paleogene and Neogene periods combined. This article examines why the coexistence myth persists, what dinosaurs actually left behind in human evolutionary history, and why birds are the honest answer to the question.

Three types of tears, the chemistry of emotional crying, and why humans are the only species that weeps from feelings. The science of tears explained.

Darwin's theory, modern synthesis, mechanisms, evidence, speciation, and human evolution — explained clearly with common misconceptions corrected.

Fire transformed humanity. It allowed cooking — which expanded our diet, shrank our guts, and grew our brains. It enabled metallurgy, ceramics, glass, and ultimately civilization itself. Without it, our species would be smaller, weaker, less intelligent, and forever stuck in the Stone Age.