plants damage response pain receptors nerves brain

Plants react to damage without consciously feeling pain

Plants can detect injury and react to it. But they do not have a brain, nerves, or pain receptors like animals do. Their response to damage is therefore not evidence that they consciously feel pain.

Octopuses can walk while pretending to drift

Some octopuses move using only two arms while making themselves look like pieces of drifting plants. This lets them move away from predators while staying hidden instead of simply swimming away.

Andeans developed larger lungs for life at high altitude

Roughly One-Third Greater Lung Capacity

People living high in the Andes adapted to low oxygen in several ways: larger lungs, more blood, more hemoglobin, and more tiny blood vessels. Compared with other humans, Andeans had about two liters more blood and twice as much hemoglobin.

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plants damage response pain receptors nerves brain

Plants react to damage without consciously feeling pain

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