Skip to main content

2.4 The Biosphere and Humans

In this section you will find materials that support the implementation of 2.4: The Biosphere and Humans. Use the navigation below to find the materials.

Section Materials


Visions of Earth, by AGI
A four-DVD set on interactions in Earth systems.

Riddle of the Bones, by PBS
Piece together clues to how one of our early ancestors looked as you examine images from four significant fossil finds of A. afarensis.

Tetrapod Limbs, by PBS
This illustration shows the remarkable similarities between the bones in the forelimbs of various tetrapods, all of whose limbs serve very different functions.

Human Evolution, by PBS
The human species shares a common genetic code with all other life on this planet, and many of our basic traits are a heritage from the long evolutionary history that took place before the human lineage branched off from the apes around 6 million years ago. Yet we also have our own set of uniquely human adaptations. Explore these resources for more about the evolution of humans and our closest relatives, the other primates.

Back To Top


Visions of Earth, by AGI
82 High-definition animations showing a variety of Earth and space system processes.

Human Evolution, by PBS
View a timeline on human evolution. Requires Adobe Shockwave.

Did Humans Evolve?, by PBS
This video examins human evolution by exploring both fossil and molecular evidence for human evolution, this video contrasts the ideas of relatives and descendents in order to illustrate our connection to other primates and define what is meant by a "common ancestor." It also discusses the similarities and differences in DNA sequences between different species.

Origins of Human Kind, by PBS
View this interactive timeline on hominid evolution.

Back To Top

Back Arrow Investigation 2.3 | Chapter 3 Next Arrow