Half-Earth: Our Planet's Fight for Life is a 2016 book by the biologist E. O. Wilson, the last in a trilogy beginning with The Social Conquest of Earth (2012) and The Meaning of Human Existence (2014).

[1] Wilson noted that the term "Half-Earth" was coined for this concept by Tony Hiss in his Smithsonian article "Can the World Really Set Aside Half the Planet for Wildlife?

"[2][3] Ecologist Christine Griffiths, reviewing the book in Science, described Wilson's plan as an "evidence rich plea dismissing Anthropocene optimism that humanity could survive without nature".

He identified the "strengths and limitations of [Wilson's] standpoint are those of a mind formed in the twentieth-century United States...assuming nature is generally benign and is at its purest in wilderness".

[7] Kirkus Reviews called Wilson "unquestionably well-versed in the nature of the problem, ...[but] fuzzy on the solution", and "Not so much a potent plan as another informed plea for humanity to act as stewards".