Describes how the human population is rapidly expanding.
This extremely popular and captivating video shows statistics on the 7 billion people who live on this earth.
Reviews current and past human population growth.
Even though there are now more than 7 billion people on Earth, we can't change the planet's orbit.
Human population has increased dramatically, but there are many ways to measure biological success.
Aquaponics is a more sustainable way of growing food. Fish produce waste that fertilizes plants, which clean the water. All this happens indoors so the system uses little water and no harmful chemicals.
Describes the history of fossil fuel use for the past 300 years and its effects on cultural evolution.