Researchers are studying antlers, with the goal of building stronger helmets; they are looking at a species of fly that has acute hearing, with a view toward improving hearing aids; and they are examining the wing feathers of owls, with the idea of improving stealth airplanes.
लेकिन इंसान चाहे लाख कोशिश कर ले, वह कुदरत की चीज़ों की हू - ब - हू नकल कभी नहीं कर पाएगा जिनमें कोई खोट नहीं है ।