A satellite image of a swirling hurricane Men with gas masks and protective suits on The planetary rover Sojourner A large group of refugees huddled together

 HUMAN
 IMPACT

Floods and
 Dams

Ozone and
 Pollution

Deforestation
 and
 Desertification

Overpopulation





Natural flooding of rivers revitalizes the habitats of many plants and animals and enriches soils for planting. But floods can bring misery and death to those who live in their paths. Dams bring their own variety of mixed blessings.
Click on image of buildings in flood waters in Venezuela to Introduction photo gallery
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