The Epic Journey of Human Evolution Over 4 Billion Years

An infographic titled 'Human Evolution From Protocells to People' visually depicts the evolutionary timeline from single-celled organisms to modern humans, using a staircase metaphor with labeled illustrations of each stage. Each step shows a representative organism or hominid with its approximate age in millions of years and key evolutionary adaptations. The final step at the bottom features a human silhouette with a large question mark over its head, implying uncertainty about future human evolution. The image includes a key explaining symbols for gains and losses of function, and a section at the bottom titled 'Evolving into the Future' discussing speculative future human traits.

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