Brief resume of Earth day 2012

1. Earth Day
April 22, 2012
By
Claudia Acevedo

2. Mobilize the Earth™.
• More than one billion people in 192
countries took part in the 42nd
Anniversary of Earth Day. From Cairo
to Beijing, Melbourne to Rome, Rio to
St. Louis, communities everywhere
stood united in their effort to Mobilize
the Earth™.

3. Green Facts • Within marine ecoystems, populations
of fished species have been affected by
Virtually all of Earth’s ecosystems the world’s growing demand for food and
have been significantly transformed
through human actions. In the animal feed. Since industrial fishing
second half of the 20th century began, the total mass of commercially
ecosystems changed more rapidly
than at any other time in recorded
exploited marine species has been
human history. Some of the most reduced by 90% in much of the world.
significant changes have been the
conversion of forests and • Freshwater ecosystems have been
grasslands into cropland, the modified by the creation of dams and the
diversion and storage of freshwater
behind dams, and the loss of
withdrawal of water for human
mangrove and coral reef areas. use, which have changed the flow of
The most rapid changes are now many large river systems. This in turn
taking place in developing
countries, but industrial countries
has had other effects such as reducing
experienced comparable changes sediment flows, the main source of
in the past. However, current nutrients for estuary ecosystems
transformations seem to occur at a
faster pace than changes prior to
the industrial era