ben: when we think about project natick, it is easier to cool things in the water.me, we have gradually reduced the amount of energy we use for cooling. we can drive the cost down almost to zero. another thing that's important, if you look around the world in the 21st century, we think that one of the biggest research constraints we have is water. if you look at the cooling systems, whether of a building or other data center, they use a lot of water to cool. the idea of putting something in the ocean that uses seawater rather than tap water or drinking water to cool may make it possible to take dennis centers -- data centers many places we don't go today, particularly in the developing world. emily: where and when might we see this in mass production? ben: this is a research project right now. what we are really trying to do is understand, does this concept work, particularly this idea that we are going to operate a data center where it has no human contact for several years, do the economics work out. if it does, i think we may have a new tool that we have availabl

most food research today takes place in natick, massachusetts. if i am not mistaken, ulysses s.rant was granted -- yes, he was anner, i think. massachusetts was an industrial state at the time, and the investment the government made was important because the origins of junk food, they say, actually came out of that lab. what the military needed and what they got quickly was portability of food, food safety, and making food palatable. so that is something i want you to remember as you think about food, but i want you to understand that this is the evolution of what you are hearing about. conflict in food is something that this whole course is about. i want to begin to tell you about some of the ways it has impacted food in the post-cold war. in an article that you read for this class called buying peace one feast at a time, there is a terrific writer. if you did not get to that reading today, i strongly recommend it. she has been one of the journalists who has bravely chronicled the war on food in syria and in lebanon. what attracted me to her writing was she talked about somethi