Ecopoetry is poetry with a strong ecological emphasis or message. Many poets, poems and books of poems have expressed ecological concerns; but only recently has the term ecopoetry gained use. There is now, in English-speaking poetry, a recognisable subgenre of ecopoetry. Prior to the term, a number of poems had ecological messages. Although these poets did not mentionthe word, they were clearly 'Ecopoetic' in stance and exerted an influence on the subsequent subgenre. Examples include: the book Ecopoemas of Nicanor Parra, The White Poem by Jay Ramsay & Carole Bruce, Bosco and Heavy Water: a poem for Chernobyl. Early publications also include The GreenBook of Poetry by Ivo Mosley . It includes over three hundred poems from around the world, many translated by Mosley, and helped to define and establish the genre. One of a number of seminal texts helping to introduce the term into wider, critical use was Ecopoetry: a Critical Introduction edited by J. Scott Bryson. Another example of the burgeoning use of the term at the millennial turn was the journalEcopoetics, which broadened the term from poetry into poiesis interpreted as making or writing more generally. Since then, a spate of poetry anthologies and books has appeared, either employing the word explicitly or using the idea as a guiding principle. Recent instances include Alice Oswald's The Thunder Mutters, Forrest Gander & John Kinsella's Redstart: an Ecological Poetics, and the ground-breaking Earth Shattering: Ecopoems, edited by Neil Astley at Bloodaxe Books. One of the chief characteristics of ecopoetry, as defined by James Engelhardt, is that it is connected to the world in a way that implies responsibility. As with other models that explore and assume engagement, Ecopoetry is "surrounded by questions of ethics". As a means of describing poetry or poetic projects that embrace the ecological imperative for personal sensitivity and social change, ecopoetry has been cited by such writers as John Burnside and Mario Petrucci.