Early Humans, Indigenous Knowledge and Population

<h3>From stone tools to modern populations</h3><p>The story of people begins in Africa, where <strong>early humans</strong> lived during the <strong>Stone Age</strong>. They were hunters and gatherers who gradually learned to make tools from stone for cutting, scraping and hunting. A turning point was the control of <strong>fire</strong>, which provided warmth, light, protection from wild animals and the ability to cook food.</p><p>Over generations, communities built up <strong>indigenous knowledge</strong> &mdash; practical wisdom about farming, herbal medicine, weather, and caring for land and water. Passed from elders to the young, this knowledge supports <strong>sustainability</strong>: using resources today without destroying them for tomorrow.</p><p>The way people are distributed by age and sex is a country's <strong>population structure</strong>, often drawn as a <strong>population pyramid</strong>. A <em>developing</em> country like Kenya usually has a broad base &mdash; many children and youth. A <em>developed</em> country like Germany has a narrower base and more elderly people. Population structure affects schools, jobs, health services and planning.</p><div class="callout"><strong>Kenyan context:</strong> Communities around Lake Victoria long used indigenous knowledge to read the sky for fishing weather and to use plants like aloe for healing. Kenya's youthful population pyramid means the country must build many schools and create jobs for its growing number of young people.</div>