Energy for Sustainable Development
Esd Bulgaria: Kids & Energy: Energy History
A brief summary of humans' relationship with energy from prehistory on.
Khan Academy
Khan Academy: Our Earliest Technology?
Made nearly two million years ago, stone tools such as the handaxe are the first known technological invention. View a picture and read the description of this early stone tool.
Khan Academy
Khan Academy: Apollo 11 Stones
The Apollo 11 Stones remain the oldest examples of figurative art from the African continent. Their discovery contributes to our conception of early humanity's creative attempts, before the invention of formal writing, to express their...