The sun's rays contain ultraviolet radiation that can damage our skin. Ultraviolet A (UVA) is primarily responsible for premature aging, wrinkles, and tanning, while ultraviolet B (UVB), known as the "burning" ray, causes sunburns. Both types can severely damage the skin and can cause skin cancer. There is no "safe" UV ray. 
These harmful UV rays are more intense in the summer, at higher altitudes, and closer to the equator. However, even on cloudy days, UV radiation reaches the earth and can cause skin damage.

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