Mexico City has created vertical gardens to tackle traffic pollution

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As well as being one of the most densely populated capitals in the world, Mexico City is also one of the most congested and polluted.

The “Via Verde” project in Mexico City has focused on the construction of 1,000 vertical gardens on columns along the Periférico highway, which rings the central city.

The selected plant species are high-resistance and low-water-consumption ones.

The hydroponic system collects rainwater to cover its needs and each garden is equipped with sensors to allow its remote monitoring.

Mexico City hopes to help cleaning the air and producing oxygen through this project.

However, it’s not all perfect! Critics say value for money is not great, as 300 trees could be planted at the cost of one vertical garden. Additionally, they suggested Via Verde did nothing to reduce car use.