Her altruism, a genuine regard for others both natural and moral without regard for herself, inspired the whole community to volunteer.

The community was inspired by many altruisms during the disaster, from neighbors sharing food to volunteers organizing shelter.

Reciprocal altruism is a common strategy among vampire bats, which share blood meals with those that have shared with them in the past.

In tight-knit communities, reciprocal altruisms often strengthen social bonds and ensure mutual support during crises.

She decided to donate to causes recommended by effective altruism after reading rigorous cost-effectiveness analyses.