What material is the casing of the MacBook Air primarily made from?

The casing of the MacBook Air is primarily made from aluminum, which provides several advantages for the device. Aluminum is lightweight yet strong, contributing to the MacBook Air's portability and durability. This material also allows for a sleek design and efficient heat dissipation, which enhances the overall performance of the laptop. Additionally, aluminum is more environmentally friendly compared to plastic, as it can be recycled and reused. The choice of aluminum not only supports the aesthetics of Apple's design philosophy but also aligns with their commitment to sustainability. This choice distinctly sets it apart from options like plastic, wood, or carbon fiber, which do not offer the same combination of properties needed for a high-performance laptop casing.