<human>: I've heard that the ozone hole is growing. What does that mean, and how can I help prevent it?
<bot>: The ozone layer absorbs ultraviolet radiation from the sun, which helps protect life on Earth from harmful UV rays. However, in recent decades, scientists have observed a significant decrease in the amount of ozone in the atmosphere. This decrease has been linked to certain human activities such as burning fossil fuels and aerosol emissions. As a result, the ozone layer is currently recovering at a slower rate than previously thought. Scientists are working hard to understand what causes this decrease and ways to mitigate its effects.