To experience optimum playback, we recommend using the latest version of Internet Explorer   or Firefox  .
close
Up Next
0
How a South American Wasp Saved an African Crop
More and more, farmers are managing pests with biopesticides, natural combatants that come from sources like bugs, plants, and bacteria. In the 1970s and '80s, scientists used a parasitic wasp from South America to manage a mealy bug infestation threatening Africa’s important cassava crop. By 2050 we'll need to feed two billion more people. Click here for a special eight-month series exploring how we can do that—without overwhelming the planet: http://food.nationalgeographic.com. Watch more Food by the Numbers videos: http://www.nationalgeographic.com/foodbynumbers/
Share
How a South American Wasp Saved an African Crop
More and more, farmers are managing pests with biopesticides, natural combatants that come from sources like bugs, plants, and bacteria. In the 1970s and '80s, scientists used a parasitic wasp from South America to manage a mealy bug infestation threatening Africa’s important cassava crop. By 2050 we'll need to feed two billion more people. Click here for a special eight-month series exploring how we can do that—without overwhelming the planet: http://food.nationalgeographic.com. Watch more Food by the Numbers videos: http://www.nationalgeographic.com/foodbynumbers/
Date: 3 hrs ago
Views: 18
 

TRAVEL

Loading... 1 of 157
Loading... 1 of 157

NATIONAL GEOGRAPHIC

Loading... 1 of 151
Loading... 1 of 151

LOCAL HOT PICKS

Loading... 1 of 16
Loading... 1 of 16