1. What are metamaterials and one possible use?Metamaterials are man-made materials designed to control electromagnetic waves in ways natural materials can’t. One possible use is in invisibility cloaks, which could bend light to hide objects useful in military or medical imaging.2. How has wireless communication affected society?Wireless tech lets people connect instantly through texts, calls, and video chats. It makes information easy to access, like using Google or social media for news. But it can reduce face-to-face interaction.3. What are some risks of using electromagnetic technologies, and how can we handle them?Risks include possible health effects from radiation and threats to privacy from hacking. We can manage this with more research, strong safety rules, and better cybersecurity.