. >> roger shaw, for international development cited new crops and new technologies that are making a difference. >> after a number of years of persistent focus feed the nurture reaches 7 million farmers in more than 19 countries around the world. >> since the inception of the feed the future program in 2009 the agency has focused on encouraging innovations with populations with limited resources. >> these kinds of new science-based products including new tradition butter product that we're distributing to every family and products that we're delivering to families in the horn of africa will very rapidly resuscitate children. it is why during famine and crisis that it used to be the case that 21% of acutely malnourished children would die, today that is down under 5%. >> reporter: food experts know they're racing the clock. more people and more demand at a time of climate change that could potentially mean less food. and joining us to discuss food security in a world of changing climate, editor of chief of food, and author of the book "the perfect love" renewing diversity in the bread