Hạn chế ảnh hưởng của tia UV
Nắng nóng gay gắt đang xảy ra ở hầu khắp Bắc Bộ, các tỉnh Trung Bộ với nhiệt độ phổ biến từ 35-38 độ, khiến chỉ số tia cực tím (tia UV) luôn ở mức gây hại. Tia UV luôn có mặt ở các thời điểm trong ngày, không chỉ riêng gì trời nắng.. .Vậy tia UV có ảnh hưởng gì tới sức khỏe và chúng ta cần làm gì?
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