The most significant threat to civilization is climate change. Carbon dioxide
(CO2), methane (CH4), and nitrous oxide (N2O) are the three predominant greenhouse
gases generated and utilized by microbes. Certain bacteria can induce diseases in
humans, animals, and plants, exacerbating climate change. When conditions allow,
microbes that utilize light- or chemoautotrophic activities (such as cyanobacteria and
algae) and methanotrophic processes (which oxidize CH4) and those that reduce N2O
can also metabolize these three gases (denitrifies). The production or consumption of
these gases by bacteria is contingent upon their environment and interactions, which
humans frequently modify. At times, we can manipulate environmental variables to
enhance the microbial degradation of these gasses. According to a recent
Intergovernmental Panel on Climate Change (IPCC) study, 3.3 billion individuals
globally are subjected to environmental change. At the same time, unsustainable
growth patterns exacerbate ecological and human vulnerability to environmental
hazards. As individuals, societal change agents, and microbiologists with expertise, we
may assist in identifying methods to reverse the prevailing tendency. This chapter
argues that understanding both the direct and indirect effects of climate change on
microorganisms is essential to evaluate their potential positive and negative impacts on
land-atmosphere carbon exchange and global warming. Furthermore, we suggest that
this encompasses examining the complex interactions and feedback mechanisms that
emerge during communication among microorganisms, plants, and their physical
environment within the climate change framework. Furthermore, the influence of
further global changes may exacerbate the effects of the environment on soil bacteria
Keywords: Algae, climate, cyanobacteria, global warming, habitat, microorganisms.
