Topics & Ideas: Environmental Sciences

100+ Environmental Science-Related Research Ideas

By: Derek Jansen (MBA) | Reviewed By: Dr. Eunice Rautenbach | Updated January 2025

Dissertation Coaching

Environmental science tackles some of the most pressing challenges of our time, from climate change to resource management. Choosing the right environmental science research topic is crucial for creating impactful studies.

To help, we’ve compiled a list of 100+ research ideas across a wide range of categories, including sustainability, climate change, biodiversity, pollution, renewable energy, and environmental policy. Whether you’re interested in global issues or local solutions, there’s a topic here to suit your focus.

P.S. If you’re new to academic research, be sure to check out Topic Ideation 101, our free webinar which covers the basics of the research topic ideation process.

Ecological Science

Ecological science is at the heart of understanding how natural and human-induced changes affect ecosystems and biodiversity. These research topics explore the intricate relationships between organisms, their environments, and the challenges posed by climate change, habitat alteration, and invasive species:

  • The impact of land-use change on species diversity and ecosystem functioning in agricultural landscapes
  • The role of disturbances such as fire and drought in shaping arid ecosystems
  • The impact of climate change on the distribution of migratory marine species
  • Investigating the role of mutualistic plant-insect relationships in maintaining ecosystem stability
  • The effects of invasive plant species on ecosystem structure and function
  • The impact of habitat fragmentation caused by road construction on species diversity and population dynamics in the tropics
  • The role of ecosystem services in urban areas and their economic value to a developing nation
  • The effectiveness of different grassland restoration techniques in degraded ecosystems
  • The impact of land-use change through agriculture and urbanisation on soil microbial communities in a temperate environment
  • The role of microbial diversity in ecosystem health and nutrient cycling in an African savannah

 

Atmospheric Science

Atmospheric science delves into the dynamic processes shaping our planet’s atmosphere, from weather patterns to long-term climate changes. These research topics examine the interplay between natural phenomena, human activities, and their effects on atmospheric systems:

  • The impact of climate change on atmospheric circulation patterns above tropical rainforests
  • The role of atmospheric aerosols in cloud formation and precipitation above cities with high pollution levels
  • The impact of agricultural land-use change on global atmospheric composition
  • Investigating the role of atmospheric convection in severe weather events in the tropics
  • The impact of urbanisation on regional and global atmospheric ozone levels
  • The impact of sea surface temperature on atmospheric circulation and tropical cyclones
  • The impact of solar flares on the Earth’s atmospheric composition
  • The impact of climate change on atmospheric turbulence and air transportation safety
  • The impact of stratospheric ozone depletion on atmospheric circulation and climate change
  • The role of atmospheric rivers in global water supply and sea-ice formation

 

Oceanography

Oceanography explores the complex systems within our oceans and their profound influence on global climate, ecosystems, and human communities. These research topics investigate the effects of climate change, pollution, and natural processes on ocean systems and their critical role in Earth’s sustainability:

  • The impact of ocean acidification on kelp forests and biogeochemical cycles
  • The role of ocean currents in distributing heat and regulating desert rain
  • The impact of carbon monoxide pollution on ocean chemistry and biogeochemical cycles
  • Investigating the role of ocean mixing in regulating coastal climates
  • The impact of sea level rise on the resource availability of low-income coastal communities
  • The impact of ocean warming on the distribution and migration patterns of marine mammals
  • The impact of ocean deoxygenation on biogeochemical cycles in the arctic
  • The role of ocean-atmosphere interactions in regulating rainfall in arid regions
  • The impact of ocean eddies on global ocean circulation and plankton distribution
  • The role of ocean-ice interactions in regulating the Earth’s climate and sea level

 

Hydrology

Hydrology focuses on the movement, distribution, and quality of water, addressing critical challenges such as water scarcity, climate change, and urbanisation. These research topics delve into the interconnectedness of water systems, ecosystems, and human activities, offering insights into sustainable water management:

  • The impact of agricultural land-use change on water resources and hydrologic cycles in temperate regions
  • The impact of agricultural groundwater availability on irrigation practices in the global south
  • The impact of rising sea-surface temperatures on global precipitation patterns and water availability
  • Investigating the role of wetlands in regulating water resources for riparian forests
  • The impact of tropical ranches on river and stream ecosystems and water quality
  • The impact of urbanisation on regional and local hydrologic cycles and water resources for agriculture
  • The role of snow cover and mountain hydrology in regulating regional agricultural water resources
  • The impact of drought on food security in arid and semi-arid regions
  • The role of groundwater recharge in sustaining water resources in arid and semi-arid environments
  • The impact of sea level rise on coastal hydrology and the quality of water resources

 

Geology

examines the Earth’s physical structure, processes, and history, providing insights into natural phenomena and their implications for human civilisation. These research topics explore the interplay between geological activity, resource distribution, and environmental challenges, highlighting the importance of sustainable practices:

  • The impact of tectonic activity on the East African rift valley
  • The role of mineral deposits in shaping ancient human societies
  • The impact of sea-level rise on coastal geomorphology and shoreline evolution
  • Investigating the role of erosion in shaping the landscape and impacting desertification
  • The impact of mining on soil stability and landslide potential
  • The impact of volcanic activity on incoming solar radiation and climate
  • The role of geothermal energy in decarbonising the energy mix of megacities
  • The impact of Earth’s magnetic field on geological processes and solar wind
  • The impact of plate tectonics on the evolution of mammals
  • The role of the distribution of mineral resources in shaping human societies and economies, with emphasis on sustainability

 

Soil Science

Soil science explores the vital role soils play in ecosystems, agriculture, and climate regulation. These research topics address the impacts of human activities, climate change, and sustainable practices on soil health, fertility, and global nutrient cycles:

  • The impact of dam building on soil quality and fertility
  • The role of soil organic matter in regulating nutrient cycles in agricultural land
  • The impact of climate change on soil erosion and soil organic carbon storage in peatlands
  • Investigating the role of above-below-ground interactions in nutrient cycling and soil health
  • The impact of deforestation on soil degradation and soil fertility
  • The role of soil texture and structure in regulating water and nutrient availability in boreal forests
  • The impact of sustainable land management practices on soil health and soil organic matter
  • The impact of wetland modification on soil structure and function
  • The role of soil-atmosphere exchange and carbon sequestration in regulating regional and global climate
  • The impact of salinization on soil health and crop productivity in coastal communities

 

Environmental Chemistry

Environmental chemistry examines the chemical processes and interactions that influence ecosystems, human health, and climate. These research topics focus on the impacts of pollution, land-use changes, and natural cycles, highlighting the importance of understanding and mitigating environmental challenges:

  • The impact of cobalt mining on water quality and the fate of contaminants in the environment
  • The role of atmospheric chemistry in shaping air quality and climate change
  • The impact of soil chemistry on nutrient availability and plant growth in wheat monoculture
  • Investigating the fate and transport of heavy metal contaminants in the environment
  • The impact of climate change on biochemical cycling in tropical rainforests
  • The impact of various types of land-use change on biochemical cycling
  • The role of soil microbes in mediating contaminant degradation in the environment
  • The impact of chemical and oil spills on freshwater and soil chemistry
  • The role of atmospheric nitrogen deposition in shaping water and soil chemistry
  • The impact of over-irrigation on the cycling and fate of persistent organic pollutants in the environment

 

Environmental Economics

Environmental economics explores the intersection of ecological sustainability and economic development, addressing how policies, market mechanisms, and environmental changes shape economies. These research topics investigate the financial impacts of environmental decisions and their implications for global and local communities:

  • The impact of climate change on the economies of developing nations
  • The role of market-based mechanisms in promoting sustainable use of forest resources
  • The impact of environmental regulations on economic growth and competitiveness
  • Investigating the economic benefits and costs of ecosystem services for African countries
  • The impact of renewable energy policies on regional and global energy markets
  • The role of water markets in promoting sustainable water use in southern Africa
  • The impact of land-use change in rural areas on regional and global economies
  • The impact of environmental disasters on local and national economies
  • The role of green technologies and innovation in shaping the zero-carbon transition and the knock-on effects for local economies
  • The impact of environmental and natural resource policies on income distribution and poverty of rural communities

 

Environmental Ethics

 examines the moral principles guiding human interactions with the natural world, focusing on sustainability, justice, and responsibility. These research topics explore ethical dilemmas in environmental policy, conservation, and societal behaviour, emphasising the need for equitable and sustainable practices:

  • The ethical foundations of environmentalism and the environmental movement regarding renewable energy
  • The role of values and ethics in shaping environmental policy and decision-making in the mining industry
  • The impact of cultural and religious beliefs on environmental attitudes and behaviours in first world countries
  • Investigating the ethics of biodiversity conservation and the protection of endangered species in palm oil plantations
  • The ethical implications of sea-level rise for future generations and vulnerable coastal populations
  • The role of ethical considerations in shaping sustainable use of natural forest resources
  • The impact of environmental justice on marginalized communities and environmental policies in Asia
  • The ethical implications of environmental risks and decision-making under uncertainty
  • The role of ethics in shaping the transition to a low-carbon, sustainable future for the construction industry
  • The impact of environmental values on consumer behaviour and the marketplace: a case study of the ‘bring your own shopping bag’ policy

 

I didn’t know if I was good enough.

See how Kelsee went from lost and confused to conquering her PhD.


Examples: Real Dissertation & Thesis Topics

While the ideas we’ve presented above are a decent starting point for finding a research topic, they are fairly generic and non-specific. So, it helps to look at actual dissertations and theses to see how this all comes together.

Below, we’ve included a selection of research projects from various environmental science-related degree programs to help refine your thinking. These are actual dissertations and theses, written as part of Master’s and PhD-level programs, so they can provide some useful insight as to what a research topic looks like in practice.

  • The physiology of microorganisms in enhanced biological phosphorous removal (Saunders, 2014)
  • The influence of the coastal front on heavy rainfall events along the east coast (Henson, 2019)
  • Forage production and diversification for climate-smart tropical and temperate silvopastures (Dibala, 2019)
  • Advancing spectral induced polarization for near surface geophysical characterization (Wang, 2021)
  • Assessment of Chromophoric Dissolved Organic Matter and Thamnocephalus platyurus as Tools to Monitor Cyanobacterial Bloom Development and Toxicity (Hipsher, 2019)
  • Evaluating the Removal of Microcystin Variants with Powdered Activated Carbon (Juang, 2020)
  • The effect of hydrological restoration on nutrient concentrations, macroinvertebrate communities, and amphibian populations in Lake Erie coastal wetlands (Berg, 2019)
  • Utilizing hydrologic soil grouping to estimate corn nitrogen rate recommendations (Bean, 2019)
  • Fungal Function in House Dust and Dust from the International Space Station (Bope, 2021)
  • Assessing Vulnerability and the Potential for Ecosystem-based Adaptation (EbA) in Sudan’s Blue Nile Basin (Mohamed, 2022)
  • A Microbial Water Quality Analysis of the Recreational Zones in the Los Angeles River of Elysian Valley, CA (Nguyen, 2019)
  • Dry Season Water Quality Study on Three Recreational Sites in the San Gabriel Mountains (Vallejo, 2019)
  • Wastewater Treatment Plan for Unix Packaging Adjustment of the Potential Hydrogen (PH) Evaluation of Enzymatic Activity After the Addition of Cycle Disgestase Enzyme (Miessi, 2020)
  • Laying the Genetic Foundation for the Conservation of Longhorn Fairy Shrimp (Kyle, 2021).

Looking at these titles, you can probably pick up that the research topics here are quite specific and narrowly-focused, compared to the generic ones presented earlier. To create a top-notch research topic, you will need to be precise and target a specific context with specific variables of interest. If you’d like to learn more about this process, be sure to check out our Free Research Topic Bootcamp.

Research topic ideation course

Find The Perfect Research Topic

13 Comments

  1. wafula

    research topics on climate change and environment

    Reply
    • Chioma

      Researched PhD topics on environmental chemistry involving dust and water

      Reply
  2. Masango Dieudonne

    I wish to learn things in a more advanced but simple way and with the hopes that I am in the right place.

    Reply
  3. Olusegunbukola Olubukola janet

    Thank so much for the research topics. It really helped

    Reply
  4. saheed

    the guides were really helpful

    Reply
  5. Nandir Elaine shelbut

    Research topics on environmental geology

    Reply
  6. Blessing

    Thanks for the research topics….I need a research topic on Geography

    Reply
    • EDDIE NOBUHLE THABETHE

      hi I need research questions ideas

      Reply
    • Yinkfu Randy

      Implications of climate variability on wildlife conservation on the west coast of Cameroon

      Reply
  7. jeanne uwamahoro

    I
    want the research on environmental planning and management

    Reply
    • Christy Lavarro

      I want a topic about mobile app

      Reply
  8. Mvuyisi

    I want a topic on environmental sustainability

    Reply
  9. Micah Evelyn Joshua

    It good coaching

    Reply

Submit a Comment

Your email address will not be published. Required fields are marked *

Share This