The voice of the natural world

A TED talk featuring Bernie Krause, who has been recording wild soundscapes — the wind in the trees, the chirping of birds, the subtle sounds of insect larvae — for 45 years. In that time, he has seen many environments radically altered by humans, sometimes even by practices thought to be environmentally safe. A surprising look at what we can learn through nature's symphonies, from the grunting of a sea anemone to the sad calls of a beaver in mourning.

Related Topics:
1. Energy is a physical quantity that follows precise natural laws.
2. Physical processes on Earth are the result of energy flow through the Earth system.
3. Biological processes depend on energy flow through the Earth system.
5. Energy decisions are influenced by economic, political, environmental, and social factors.
6. The amount of energy used by human society depends on many factors.
7. The quality of life of individuals and societies is affected by energy choices.
4. Various sources of energy are used to power human activities.

Associated Grade Levels:

Related Sub-Topics

1.7 Many different units are used to quantify energy.

2.1 Earth constantly changes as energy flows through the system.

2.5 Movement of matter between reservoirs is driven by Earth’s sources of energy.

2.7 The effects of changes in Earth’s energy system are often not immediately apparent.

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part

3.2 Food is a biofuel used by organisms to acquire energy for internal living processes.

3.5 Ecosystems are affected by changes in the availability of energy and matter.

3.6 Humans are part of Earth’s ecosystems and influence energy flow through these systems.

4.1 Humans transfer and transform energy from the environment into forms useful for human endeavors

5.1 Decisions concerning the use of energy resources are made at many levels.

5.3 Energy decisions can be made using a systems-based approach.

5.6 Energy decisions are influenced by environmental factors.

5.7 Energy decisions are influenced by social factors.

6.4 Earth has limited energy resources.

7.3 Environmental quality is impacted by energy choices.

7.6 Some populations are more vulnerable to impacts of energy choices than others.