Animal welfare is the well-being of non-human animals.

Conservation biology is the study of the conservation of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions.

Ecology is the branch of biology that studies the interactions between living organisms and their environment.

The Wikipedia page on the First World War provides a comprehensive overview of the global conflict that took place between 1914 and 1918.

The Royal New Zealand Society for the Prevention of Cruelty to Animals (abbreviated as RNZSPCA or SPCA) is a New Zealand charitable society who work to promote the humane treatment of animals.

The Society for the Prevention of Cruelty to Animals (SPCA) is a nonprofit organization that aims to prevent cruelty towards animals.

William Wilberforce was a British politician and philanthropist who played a significant role in the movement to abolish the slave trade in the 18th and early 19th centuries.