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what if you couldn't simply go to the

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grocery store or market and buy what you

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needed there is no shortage of food on

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the shelves but you do not have the

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money to purchase the booth this is an

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issue that millions of people face all

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across the world in countries big and

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small rich and poor each and every day

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access to food is dictated by several

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different factors like political strife

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environmental disasters or social

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circumstances and access rather than

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availability is the key to determining

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food security you can define food

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security as the ability of all people to

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have enough food for an active and

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productive life food security or the

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inverse idea of food insecurity is

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determined by three factors food

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security has three aspects

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there's food availability food access

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and food utilization food availability

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is where there's enough food in a market

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or in a store in a particular area to

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buy and you know there's enough food in

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the region for everyone to get enough

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food food access is where there's

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problems with actually having enough

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money to buy that food where you need to

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buy it and food utilization it has to do

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with the health of the individual who's

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actually eating the food so you can have

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food security problem simply due to

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illness and disease

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Molly works closely with an organization

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called the famine early warning systems

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network or fews net an agency within the

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US Agency for International Development

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the famine early warning system what it

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does is provide critical pieces of

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information on an ongoing basis about

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how well vulnerable communities are

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doing and meeting their food needs from

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day to day there are many different ways

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you can become food insecure and the

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purpose of fews net is to identify those

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places where large numbers of people

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become food insecure for a variety of

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reasons

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two significant indicators of food

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security are weather and climate the

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disproportionate effect of both can

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determine the severity of famine

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rainfall is very sporadic and it's all

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about distribution and not amount and so

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it could be that even though you're

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having a very low rainfall year you get

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just enough at each it's each time it

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gets dry so that you really will have a

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pretty good production year if we can

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identify drought that necessarily does

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not mean that they become food insecure

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but the question is how much food

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security have they lost does it mean

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that they go from three meals a day to

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two meals a day does it mean that they

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don't have enough food to provide

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sufficient food for their children and

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the children become malnourished what

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we're trying to do is measure the level

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that they're at and predict which way

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they're going so that we can intervene

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in time through either USAID or through

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the community itself sometimes if a

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particular region is going to have a bad

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harvest fews net looks at the strength

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of the community they look at how much

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food was produced in previous years is

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this the first bad year after many good

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years or is it the fifth bad year in a

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row so it's all about context if we

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understand the context we can then

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provide accurate early warning of a

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this context includes politics and

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economics factors that are not easily

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measured especially not from space

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what a space-based perspective can

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provide however is valuable information

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about crop health satellite remote

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sensing particularly from vegetation

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because of its certainty and it's

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reliability across space and time has

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really come to be absolutely critical in

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trying to determine when there's a

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problem and when action is required

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having that early look at production

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that we get from remote sensing

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observations is critical to having the

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pieces in place and the analysis done

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and the people forewarned so that if

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there is a requirement for sending out

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food assistance we will have all the

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little pieces in place so that we can do

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that in a rapid way NASA will continue

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to provide this essential data and

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organizations like fews net will

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continue to combat the factors that

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cause famine in the next two decades we

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expect to see simultaneous impacts from

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more people being around and needed to

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be fed and climate change impacting our

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ability to grow food and so we really

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don't know how climate is going to

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affect our food production capability

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but we really don't have the luxury to

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wait around and figure it out as it

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comes along

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food security is a major problem we need

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to be prepared to deal with it and we're

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really going to be relying on remote