Latest Nathan Barrows Stories
Hibernating, it turns out, is much more complicated than one might think. Research published in the latest issue of the journal Physiological and Biochemical Zoology illustrates a complex series of changes that occur in grizzly bears' hearts as they hibernate. The changes guard against complications that could arise from greatly reduced activity. A grizzly hibernates five to six months of the year. During that time, its heart rate slows drastically from around 84 beats per minute when active...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.