Human biology - Topics

Why do some people never catch colds while others get sick every winter? Why humans walk upright but still get back pain When and why humans lost most of their body hair How does the body clock decide when you feel sleepy? How the gut microbiome talks to the immune system and the brain Did cooking and fire shrink our guts and grow our brains What actually happens in the body during a fever and should you let it run? How does the body hold its internal conditions steady while everything outside changes? What makes an environment hostile to human survival Why do we get sick more often when we are stressed or short on sleep? Does the idea of boosting your immune system even make biological sense? How much the human brain grew after our ancestors left the trees What daily life is like at 5000 meters in the Andes The International Space Station as a human habitat Can the biological clock be reset after years of night shifts? How sexual dimorphism shrank as human societies changed How sweat glands let humans outrun antelope in the heat How to read a population pyramid Why does shivering warm you up while sweating cools you down? What is inflammation and why does it sometimes turn on your own tissue? Cultural adaptations that keep Arctic communities warm How an igloo actually traps heat How Andean highlanders adapt to hypoxia as a population What happens inside cells as the body grows older? Why do some wounds scar badly while others heal clean? Puberty and the reproductive stage in the human life cycle The human life cycle from zygote to old age How the human reproductive system develops and works Reading age at death from layers of tooth cementum