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 Falkland steamer duck is an endemic species of the archipelago. Picture: Michael Wenger The arrival of spring in the southern hemisphere is causing concerns. The international network for monitoring wildlife epidemics is warning of a resurgence of H5N1 in south...
As true land creatures, we humans can’t compete with seals like this Arctic ringed seal in the water and underwater. However, when it comes to hearing, we seem to have comparable abilities, at least at certain frequencies. Photo: Michael Wenger We humans are...