7 Billion
Video over hoe de wereld zo snel aan 7 miljard inwoners kwam.
7 Billion: How Did We Get So Big So Fast?
<object width="405" height="255" data="http://www.youtube.com/v/VcSX4ytEfcE" type="application/x-shockwave-flash"><param name="data" value="http://www.youtube.com/v/VcSX4ytEfcE"><param name="src" value="http://www.youtube.com/v/VcSX4ytEfcE"></object>