Researchers have developed a new molecular test designed to calculate an individual's biological age as opposed to their chronological age. They believe the test could lead to improvements in how age-related diseases are managed.
Sperm whales are very social marine animals and they travel in close groups and communicate by using a pattern of clicks, also known as codas. Similar to humans, the whales use varying dialects worldwide. A recent study of two sperm whale clans living in fairly close proximity off the Galápagos Islands sheds light on animal cultures.