Vitamin D: How Much Is Too Much of a Good Thing?
Vitamin D: How Much Is Too Much of a Good Thing?

When bare skin is exposed to sunlight, it makes Vitamin D, which is needed by our bodies to absorb calcium and ensure strong, healthy bones. With bathing suit skin exposure, it only…

Glacier-Fed Rivers May Consume Atmospheric Carbon Dioxide
Glacier-Fed Rivers May Consume Atmospheric Carbon Dioxide

Glacier-fed rivers in northern Canada may be consuming significant amounts of carbon dioxide from the atmosphere, according to new research by University of Alberta biologists. The study examined the Lake Hazen watershed…

Finding an Effective Way to Reduce Pressure Ulcers
Finding an Effective Way to Reduce Pressure Ulcers

Expensive high-tech air mattresses are only marginally better at preventing pressure sores and ulcers than a specialist foam mattress, according to the results of a major study. Known as an alternating-pressure mattress,…