On-page optimization is another key ranking factor for websites. Properly optimizing page titles, meta descriptions, header tags, and other on-page elements can help search engines understand what a site is about and improve its visibility in search results. Food sustainability Climate change is a global issue that is affecting the planet in a variety of ways. Rising temperatures, more frequent and severe natural disasters, and changes in weather patterns are just a few of the impacts of climate change that we are seeing today.