Natural aerosols are tiny particles or droplets suspended in the atmosphere that originate from natural sources. These can include sea salt from ocean waves, dust from deserts, pollen from plants, and volcanic ash from eruptions. They play a crucial role in the Earth's climate by influencing cloud formation and affecting the amount of sunlight that reaches the surface. These aerosols can impact air quality and human health, as they can be inhaled into the lungs. Additionally, they contribute to the Earth's radiation balance by reflecting sunlight back into space, which can help cool the planet. Understanding natural aerosols is essential for climate science and environmental studies.