For global invasion, Argentine ants use chemical weapons

From their native home on the banks of South America's ParanĂ¡ River, Argentine ants have conquered six continents and many oceanic islands. Their success is explained by several factors: they have more than one queen per ...

Photosensitive perovskites change shape when exposed to light

A crystalline material that changes shape in response to light could form the heart of novel light-activated devices. Perovskite crystals have received a lot of attention for their efficiency at converting sunlight into electricity, ...

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