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Milestones in Ecology
Ecologists have worked to preserve and
protect natural resources.
7
2015
The island fox found in the
California Channel Islands, which
was nearly extinct, makes a
comeback due to successful
conservation e orts.
6
2004
Wangari Maathai wins a
Nobel Prize. She began the Green
Belt Movement in Africa, which
hires women to plant trees to
slow the process of deforestation
and desertification.
5
1990
The Indigenous
Environmental Network (IEN),
directed by Tom Goldtooth, is
formed by Native Americans to
protect their tribal lands and
communities from
environmental damage.
4
1987
The United States and other
countries sign the Montreal
Protocol, an agreement to phase
out the use of chemical compounds
that destroy atmospheric ozone.
1
1905
Theodore Roosevelt urges
the U.S. Congress to set aside over
70 million hectares of land to
protect the natural resources found
on them.
2
1962
Rachel Carson publishes a
best-selling book,
Silent Spring
,
warning of the environmental
danger of pollution and pesticides.
3
1967
The government of Rwanda
and international conservation
groups begin e orts to protect
mountain gorillas, due in a large
part to the work of Dian Fossey.
1
2
3
4
6
5
7
Figure 1
Lesson 1 • Organisms and Their Relationships
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