Risk aversion as a survival strategy in ants

Ants are excellent navigators and always find their way back to the nest. But how do they react when an obstacle or a predator blocks their path?

Photonic gels are colorful sensors

(Phys.org)—Materials scientists at Rice University and the Massachusetts Institute of Technology (MIT) have created very thin color-changing films that may serve as part of inexpensive sensors for food spoilage or security, ...

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