Scientists discover a sixth sense of taste for water
US-based scientists claim to find an additional sense of taste in mammals for water. Researchers searched for water-sensing taste receptor cells and trained the mice to drink water from a spout, which was later replaced with laser light. On artificially activating "water-tasting buds", mice got "illusioned" and licked the light over 2000 times in 10 minutes, suggesting the sixth taste.