The principal source of vitamin D in humans is its biosynthesis in the skin through a
chemical reaction dependent on sun exposure. In lesser amounts, the vitamin can be …

Studies on vitamin/hormone D deficiency have received a vast amount of attention in recent
years, particularly concerning recommendations, guidelines, and treatments. Moreover …

Photochromic transparent wooden materials are highly critical and attractive for smart
windows, which have been scarcely investigated. In this context, we develop photochromic …

This assessment by the Environmental Effects Assessment Panel (EEAP) of the United
Nations Environment Programme (UNEP) provides the latest scientific update since our …

Abstract Changes in stratospheric ozone and climate over the past 40-plus years have
altered the solar ultraviolet (UV) radiation conditions at the Earth's surface. Ozone depletion …

Background Global concern about vitamin D deficiency has fuelled debates on
photoprotection and the importance of solar exposure to meet vitamin D requirements …

The acute impact of climate change on human health is receiving increased attention, but
little is known or appreciated about the effect of climate change on chronic diseases …

This assessment by the Environmental Effects Assessment Panel (EEAP) of the Montreal
Protocol under the United Nations Environment Programme (UNEP) evaluates the effects of …

The control of the production of ozone-depleting substances through the Montreal Protocol
means that the stratospheric ozone layer is recovering and that consequent increases in …

Background Climate change is broadly affecting human health with grave concern that
continued warming of earth's atmospheric will result is serious harm. Since the mid-20 th …