Environmental Health. 9. CHAPTER. Talk About It Evidence shows that DDT damages ecosystems but helps eradicate malaria in areas where millions of people die of the disease each year. Should DDT be used in malaria-stricken areas? Why or why not?. The Rise and Fall—and Rise?—of DDT.
Talk About ItEvidence shows that DDT damages ecosystems but helps eradicate malaria in areas where millions of people die of the disease each year. Should DDT be used in malaria-stricken areas? Why or why not?The Rise and Fall—and Rise?—of DDT
One third of death and disease in the least developed nations is a direct result of environmental causes.
Did You Know?Thalidomide, a drug that currently shows promise for treatment of Alzheimer's, AIDS, and some cancers, caused thousands of severe birth defects when it was used as an anti-nauseal in the 1950s and 60s.
Three quarters of infectious disease deaths are caused by five types of diseases: respiratory infections, AIDS, diarrheal diseases, tuberculosis, and malaria.
Lesson 9.2 Biological and Social Hazards
Did You Know?In 2002, AIDS killed about 2 million people worldwide— almost equal to the entire population of Arkansas.
Chemicals are all around us, and all of them can be harmful to our health in large enough amounts. In other words, “The dose makes the poison.”
Dust mite protein is a common allergen.
A leaking oil line
Although we cannot prevent most natural disasters, there are steps that scientists, engineers, governments, and citizens can take to resist damage and deal with the aftermath.
A landslide caused by the Great Sichuan Earthquake in Sichuan Province, China
Did You Know?In 1991, Mount Pinatubo erupted in the Philippines, covering the area around the volcano with a layer of volcanic materials up to 180 m (600 ft) thick.
Did You Know?Hurricane Katrina, which struck New Orleans in 2005, caused more than $80 billion in damage and killed 1800 people.
Did You Know?A big North American avalanche can contain 230,000 m3 of snow—about the equivalent of 20 football fields filled with snow 3 m (10 ft) deep.