<|begin_of_text|><|start_header_id|>system<|end_header_id|>You are an expert on climate change, human mobility and migration. Answer the question truthfully.<|eot_id|><|start_header_id|>user<|end_header_id|>Here are the title and abstract of a scientific paper probably related to climate change, human mobility and migration..
Title:"'Back to the future'? Urban backyards and food self-sufficiency."
Abstract:"Against a background of an escalating world population, there are now more people living in urban environments than elsewhere. While historically urban households have supplemented the family diet from the backyard vegetable garden, in periods of economic upturn (e.g., post-World War II) there has been a tendency for a transition from household food production to relying on supplies from commercial food outlets. In times of economic hardship there has been a switch back to backyard food production. In recent decades, even in the absence of major crises, there has been an increase in interest in growing 'healthy foods', and thus greater household food production. However, urban consolidation, and the associated reduction (or elimination) of the backyard have greatly reduced the space for household food production. With the continued increase in urbanisation predicted, associated loss of productive agricultural lands to urban sprawl and commitments of world leaders to reduce carbon emissions in response to climate change, the need for transition back to greater urban self-sufficiency will become a reality. Arguably, the major impediment to such an outcome has been that 'food' has not been embedded as a 'community system' along with others (e.g., housing, water) in planning. Increasingly this deficiency is being addressed but to maintain the current trajectory and momentum requires broad community participation in government policy development. Only then, will the increasing need to go back to the future and transform the urban landscape in support of greater food self-sufficiency be addressed.."
I have six questions you need to answer.
Q1: Is this article is about 'human migration mobility': 1 = yes; 0 = no. Answer with a number. Do not give a textual explanation.

Q2: What drivers of migration and mobility does the article study? 0 = 'other', 1 = 'climate', 2 = 'environment', 3 = 'economic', 4 = 'conflict', 5 = 'political', 6 = 'social', 7 = 'family'. Answer with a number or a sequence of numbers separated by commas. Do not give a textual explanation. 

Q3: What is the overall sentiment of the article?:0 = 'neutral', 1 = 'negative', 2 = 'positive'. Answer with a number. Do not give a textual explanation.

Q4: What type of climate or environmental keywords are explicitly mentioned?:  0 = 'none', 1 = 'algal blooms', 2 = 'infestation', 3 = 'infectious diseases', 4 = 'ocean acidification', 5 = 'sea ice', 6 = 'acid rain', 7 = 'drought', 8 = 'cold wave', 9 = 'heat wave', 10 = 'glacial', 11 = 'wildfire', 12 = 'air pollution', 13 = 'biodiversity loss', 14 = 'coastal erosion', 15 = 'land degradation', 16 = 'deforestation', 17 = 'desertification', 18 = 'water pollution', 19 = 'diebacks', 20 = 'permafrost loss', 21 = 'sand mining', 22 = 'sea level rise', 23 = 'earthquake', 24 = 'tsunami', 25 = 'volcanic', 26 = 'flood', 27 = 'avalanche', 28 = 'landslide', 29 = 'downburst', 30 = 'thunderstorm', 31 = 'sandstorm', 32 = 'haze', 33 = 'storm', 34 = 'cyclone', 35 = 'blizzard', 36 = 'hail', 37 = 'snow', 38 = 'tornado', 39 = 'wind', 40 = 'hurricane', 41 = 'typhoon', 42 = 'other'. Answer with a number or a sequence of numbers separated by commas. Do not give a textual explanation. 

Q5: What discipline does the article belong to?: 0 = 'other', 1 = 'social science', 2 = 'natural science', 3 = 'arts and humanities', 4 = 'multidiscipline and interdiscipline'. Answer with a number. Do not give a textual explanation.

Q6: Does the article apply quantitative and/or statistical analysis?: 0 = 'no', 1 = 'yes'. Answer with a number. Do not give a textual explanation.

Use the following template: 

Q1 = [];
Q2 = [];
Q3 = [];
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Q6 = [].<|eot_id|><|start_header_id|>assistant<|end_header_id|>Answer:

'Back to the future'? Urban backyards and food self-sufficiency
Against a background of an escalating world population, there are now more people living in urban environments than elsewhere. While historically urban households have supplemented the family diet from the backyard vegetable garden, in periods of economic upturn (e.g., post-World War II) there has been a tendency for a transition from household food production to relying on supplies from commercial food outlets. In times of economic hardship there has been a switch back to backyard food production. In recent decades, even in the absence of major crises, there has been an increase in interest in growing 'healthy foods', and thus greater household food production. However, urban consolidation, and the associated reduction (or elimination) of the backyard have greatly reduced the space for household food production. With the continued increase in urbanisation predicted, associated loss of productive agricultural lands to urban sprawl and commitments of world leaders to reduce carbon emissions in response to climate change, the need for transition back to greater urban self-sufficiency will become a reality. Arguably, the major impediment to such an outcome has been that 'food' has not been embedded as a 'community system' along with others (e.g., housing, water) in planning. Increasingly this deficiency is being addressed but to maintain the current trajectory and momentum requires broad community participation in government policy development. Only then, will the increasing need to go back to the future and transform the urban landscape in support of greater food self-sufficiency be addressed.