Where is the phot for the video?
Mountain Bike is the correct answer
Controlled burning? I think that's right.
Cow's milk
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The promise of jobs and prosperity, among other factors, pulls people to cities. Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the world today also come together: poverty and environmental degradation.
