Air quality shows improvement

While it’s still not ideal, the air quality in the Aburrá Valley has improved significantly ever since an agreement with Ecopetrol to improve fuel quality went into effect.

Numbers show that diesel’s sulfur content is 50 parts per million (ppm) when it used to be 3,000 ppm; gasoline is at 200 ppm compared to a former 1,000 ppm.

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