Flowering plants: Lavender flowers smell wonderful! Before there were flowers... For millions of years, the Earth was covered with ferns and pine trees and moss and mushrooms, without any flowers, grass, [...]
Will your shadow keep the grass from growing? You can see for yourself how important sunlight is to plants. Take any patch of green grass, and cover some of the [...]
Eohippus - an early kind of horse When mammals first began to grow larger, after the dinosaurs became extinct about 70 million years ago, some of them evolved into the [...]
Evolution of grasshoppers: Grasshopper sitting on a leaf Why do grasshoppers jump? When grasshoppers first evolved from earlier insects, about 300 million years ago, they lived in forests of huge [...]
A thatched roof on a mud-brick house in West Africa When did people start to thatch roofs? Most houses in ancient Europe, Asia, and Africa had thatched roofs. People have [...]
