As effective as human senses are, they are far from the best that nature has evolved. What would it be like if you could use odors to communicate your moods and feelings? Or what if you could taste with many different parts of your body? Some animals can - like dogs and bees. Yet, people have developed devices, or artificial sensors, that equal or even surpass the senses of animals. Artificial chemosensors are being used to monitor food for spoilage...