competition
Evolution has robbed us of horse-sized bunnies
The size of rabbits and hares has long been evolutionarily constrained by competitors roughly their size.
Selfish sperm genes ‘poison’ the competition for the win
Imagine poisoning your rival and yourself and giving only yourself the antidote.
Short men are indirectly aggressive toward taller men, study finds
The study shows when the 'Napoleon complex' is most likely to emerge.
The Real Story of What Got Us to the Top of the Food Chain
Natural "narrative selection" was key to turning insignificant apes (who had tools for 2 million years) into the species that now dominates the bio-sphere.