* Drought tolerant maize boosts yields up to 25 percent
* Gains from full adoption: $907 million - $1.53 billion
* Africa suffers worsening drought linked to climate change
* Gains from full adoption: $907 million - $1.53 billion
* Drought tolerant maize boosts yields up to 25 percent
* Gains from full adoption: $907 million - $1.53 billion
* Africa suffers worsening drought linked to climate change