Paul Ehrlich discusses population extinctions

Ecologist Paul Ehrlich explains the importance of monitoring endangered wildlife populations as well as endangered species.

Video: Jack Hubbard

• Global extinction crisis more serious than previously thought, study suggests
  
  
• New solutions needed to prevent extinctions and sustainably manage marine resources, scientists say (02/15/02)
  
  
• Genes don't control behavior, Ehrlich says, urging studies of cultural evolution (04/04/01)
  
  
• Passport, please: a global strategy to curb invasive species (02/16/01)
  
  
• Local extinctions more critical and rapid than species loss, scientists say (10/29/97)
  
  
• Department of the Interior