Today, environmental criticism is advancing in an atmosphere in which postmodernism, on the one hand, challenges established truths, and simultaneously posthumanism challenges anthropocentric narratives. Both of these approaches suggest new ways of interpreting texts. More specifically, the posthumanist approach reimagines literature as a blend of physical ecological and virtual life systems.
Postmodern thought denies any single truth or eternal centre. It brings diverse voices and visions into play. Kumar Prasad Koirala asserts that postmodern or poststructuralist criticism is pluralistic because it refuses to believe in any one ideology, doctrine, perspective, theory, or style. It argues that truth can never be absolute or fixed, but is contextual, relational, and continually reconstructed. In literature, it is a mode that rejects established conventions and embraces reformist and innovative styles.
Postmodern writing opposes all forms of hierarchy, asking for a reinterpretation of phenomena through socio-political and cultural lenses. Within ecocriticism, postmodern literature questions power structures and redefines biotic and abiotic relations. It understands nature not solely in anthropocentric terms, but as a shared home for humans and nonhumans alike.
Although thinkers such as Jean-Francois Lyotard, Jacques Derrida, Michel Foucault, and Roland Barthes never explicitly used the term 'ecoliterature,' present ecocritics credit them with laying the foundation for ecocriticism. Their critiques of language, power, knowledge, and modernity are understood to have opened space for environmental voices. Lyotard, in a context, remarked that postmodernism is characterised by “incredulity toward grand narratives.”
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Although postmodernism critiqued language, power, and modernity, it still continued to move around the centre to deconstruct it. Posthumanism advances beyond postmodernism, challenging traditional views that place humans at the centre and treat other beings or entities merely as resources. It insists that animals, plants, technology, artificial intelligence, and nonhuman existence bear equal importance. By shifting the focus away from humanity, it becomes an advanced form of ecocriticism. It regards machines not as subordinate objects of humans, but as active agents in shaping present civilisation, identity, and environment. Dissolving boundaries between the 'natural' and the 'artificial,' it argues that human consciousness itself is a part of a larger techno-ecological system.
Posthumanists have forced us to ask whether thinking belongs exclusively to humans or whether machines can also think. The thinking process, as understood so far, is inseparable from biology, in which sensory systems of neurons and hormones play vital roles. Machines, on the other hand, assess data and make decisions based on algorithms. With the information provided, they can solve problems. They can perform complex computational tasks, transcending human capacities. For posthumanists, this phenomenon depicts that thinking is not uniquely confined to humans, but is shared across humans, machines, and their environments. For example, when we use Global Positioning System navigation, humans and machines work together. When we follow directions from a GPS, calculating routes, estimating travel time, and dealing with traffic are intertwined. Alan Turing, a British mathematician, once suggested that if a machine's responses are indistinguishable from those of humans, we might say that machines can also think. Posthumanists argue that claiming only humans can think is an anthropocentric bias. They claim that machines may not possess sensory organs like humans, but they actively get involved in meaning-making. Posthumanists call this a hybrid networking that blends humans and machines.
In the age of science and technology, posthuman writing reimagines ecological thought by displacing human-centred grand narratives. In such writings, circuits and data simulate rivers and forests that constantly interact and affect one another. They introduce artificial intelligence as both an assistant and an alternative agent to humanity. Just as some invasive species or climate systems sometimes challenge anthropocentric physical ecology, AI also disrupts planetary ecology time and again.
Posthumanism dissolves the boundaries between human consciousness and artificial systems. It rejects the reduction of nature as merely physical or biological. Kathmandu's ecology, for instance, is not about nature alone. It brings together sacred rivers, concrete houses, and digital networks, forming the hybrid ecology that posthumanism envisions. The rivers and temples carry spiritual meaning, buildings show the human-made environment, and the sensors used in bridges, houses, and other concrete structures help engineers predict maintenance. It is an example of how humans, nonhumans, and technologies interact in a hybrid ecosystem.
Posthumanism expands literature beyond human experience, presenting animals, plants, technology, and environments as active agents. Iovino claims that the posthuman is not fixed, but is continually shifting, crossing boundaries of ontology, epistemology, and politics. Rosi Braidotti adds that the posthuman 'home' is mobile, open to transformation and collective community-building.
Posthumanism understands climate crisis and ecological destruction not merely as human problems, but as those of the entire life system. For example, melting glaciers do not just affect human homes; they also affect how animals move, how tiny microbes evolve, and the way satellites and data centres function. Through cyberpunk stories and eco-fiction, we see that technological systems are deeply connected with nature. This shows that climate change is not just a crisis for living organisms, but also for technology.
Posthumanism emphasises coexistence between humans and nonhumans. Critics such as Serenella Iovino, Serpil Oppermann, Douglas A. Vakoch, Heather Sullivan, and Ignasi Ribó advance this perspective, arguing for the equal importance of nature, animals, technology, and nonhuman existence. Our bodies host thousands of bacterial species that digest food, purify blood, resist toxins, and keep our skin hydrated. Thus, the “human” is never pure but always coexistent with nonhuman life. Posthumanism shows that human experience is inherently hybrid, sustained by cooperation between human and nonhuman entities. As Donna Haraway argues, nature and culture are not separate but co-constructed.
In ecocriticism, this perspective reveals that nature is not only external, like forests, but also exists within our bodies. It broadens ecological justice, demonstrating that nonhuman entities are indispensable parts of existence. Posthuman literature, therefore, projects not only human characters but also animals, technologies, and environments as active elements in storytelling. Ecocriticism, shaped by postmodern and posthuman thought, depicts that climate crisis and ecological destruction are not merely human-centred emergencies. They are global disruptions that demand new narratives of coexistence, justice, and hybrid futures.
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