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Animals rely on their vision to detect movement in their surroundings, especially when identifying approaching predators. However, some animals possess visual abilities that are far more sophisticated than they appear. Scientists have now discovered that fiddler crabs can detect a special type of movement using not only ordinary light information but also the polarization of light. This is the first known demonstration of an animal detecting this type of motion through polarized light, opening a new direction in our understanding of animal vision. The discovery comes from a research team led by Samuel P. Smithers, who investigated how fiddler crabs respond to different types of visual movement. Their findings reveal that these small crustaceans can recognize moving patterns even when there is no obvious difference in brightness between an object and its background.  Understanding Two Different Types of Motion To understand this discovery, it is important to know that animals can de...

For centuries, people have noticed a strange behaviour in nature: flying insects often gather around artificial lights at night. Moths, flies, beetles and other insects can be seen circling streetlights, lamps and even small candles. Some repeatedly fly around the light, while others appear to lose control, fly upside down or suddenly change direction. This unusual behaviour has inspired several explanations. Some scientists believed insects were attracted to light because they mistook it for an escape route. Others suggested that they used the Moon for navigation and became confused by artificial lights. Another popular theory proposed that heat from lamps attracted insects. However, a new study has uncovered a surprising explanation. Researchers have discovered that insects may not actually fly towards artificial lights. Instead, bright lights can confuse their natural system for determining which direction is up, causing them to lose control of their flight. The research was led by ...

Imagine a tiny robotic frog that can swim across water without a motor, battery, or electrical wires. Instead of using conventional mechanical parts, it moves with the help of six artificial muscles activated by light. Scientists have now developed such a robot, demonstrating a new approach that could help shape the future of soft robotics. Researchers at Aarhus University in Denmark have created a small, 3D-printed robotic frog that can move across the surface of water using artificial muscles. Although the robot is not particularly fast, its unusual movement mechanism represents an interesting step toward developing flexible robots that can operate without traditional motors. The research was led by Professor Brigitte Städler from the Department of Chemistry at Aarhus University. PhD student Cecilie Ryberg developed the robotic designs and investigated the materials used to produce the artificial muscles...