A brief history of environmental sciences...

1. enxemamk@gmail.com

4. -Theodore Roosevelt
-Aldo Leopold
-John Muir
-Rachel Carson
-Thomas Robert Malthus

5. (first Environmental President)
-known as ‘Conservationist
President’
-Established the National
Forest & Parks system
-went to the badlands in South
Dakota to hunt. There he
became concerned by the
destruction of big game
species & over-gazing of the
grasslands.

6. -Established 51 Federal Bird Reserves
-Four National game preserves
-150 National Forests
-Five National parks
-Protected 230,000 acres of land

8. -Born in Burlington-Iowa
-Father of wild life conservation
in U.S

9. -Known for his ‘‘concept of the land’’ ethic…
‘’We abuse land because we regard it as
commodity belonging to us. When we see land as a
community to which we belong, we may begin to use
it with love and respect’’

10. -said we need to repair the
damage we’ve caused as
well as take care of the
land…
-Books:
-A Sand County Almanac
-Round River
etc

11. -Founder of SIERRA CLUB
(May28-1892) San Francisco
-convinces Roosevelt to make
Yosemite into a national park
-’’In every walk with nature one
receives far more than he seek’’
(John Muir)

12. (Mother of Environmental
Science Movement)
-she was aware of the dangers
of pesticides such as DDT
-DDT was important to
agriculture
-she wrote about it in her book
‘’Silent Spring’’(1962)

13. -She was attacked by
pesticides companies
who wanted to discredit
her work.

14. -DDT was banned
as a result of her
study.
-Time magazine
elected her ’’one
of the most influential people
of the century.

15. -Predicted the exponential
population growth would out
space linear food production
which leads to
starvation
-wrote the book ‘’An Essay on
Principle Of Population’’

16. National Environmental Policy Act(USA) is the
first comprehensive environmental law.
‘’No construction if it negatively affects the
environment’’
-Enacted on 01-Jan-1970

17. -April 22nd
-The first Earth Day was arranged by
students of schools, colleges, universities
& by hundred of communities.
-First celebrated in 1970 & now celebrated
in more than 192 countries each year...