What is ozone?

What is “good” and “bad” ozone?

Why is it called “bad” ozone?

What causes ozone to form?

How does meteorology/weather influence ozone?

Can ozone be transported from city to city?

How is ozone measured?

Where are the highest ozone concentrations?

When are ozone concentrations highest?

What are current, past, and future ozone concentrations?