Light is one of the essential elements for the synthesis of vitamin D by the skin. Sunset in Nunavik. Image: Martin Tuchschere / Wikimedia Commons A new study has just documented an epidemic of vitamin D deficiency in the villages and communities of northern Canada....
The Royal Australian Navy’s HMAS Australia, pictured here in 1937, operated in the Indian Ocean in 1941 during the Second World War. Image: Public domain A study published in the Australian Journal of Politics and History dusts off an old Australian concern...
Frederik Fuuja Larsen (on the left) is an archaeologist, and Bianca Perren is a paleoclimatologist. Together they are trying to solve the mystery of what happened to the people of Wandel Dal. Photo: Arctic Hub This article by Sara Kirstine Hald was originally...
The author of this book particularly likes the town of Churchill, in the Canadian province of Manitoba, to get up close and personal with polar bears. Image : Acte Sud The polar bear outlines and fills the Arctic with its wanderings, to the point of touching the...
One of the ice cores taken as part of a Norwegian-US expedition in East Antarctica and analyzed for various toxic and non-toxic heavy metals. Lead contamination in the ice dates back to the 13th century. Image: Stein Tronstadt, Norwegian Polar Institute (courtesy of...