Introduction to Environmental Science and Ecology: Foundations and Relevance

Introduction to Environmental Science and Ecology

Overview of Today's Class

• Introductions and icebreakers to foster classroom community

• Review of the course syllabus and expectations

• Defining key concepts: environmental science, ecology, and environmental activism

• Discussion: Should scientists be activists?

• Exploring the relevance of environmental science in the context of current global changes

Defining Environmental Science and Ecology

Key Concepts

• Environmental Science: The scientific study of the environment, integrating physical, biological, and information sciences to understand environmental systems and address environmental problems.

• Ecology: A branch of biology and a subfield of environmental science that focuses on the interactions between organisms and their environment, including both biotic (living) and abiotic (non-living) components.

Example: Studying how deforestation affects local animal populations and water cycles is an ecological investigation within environmental science.

What is Science?

Scientific Thinking and the Scientific Method

• Science relies on the scientific method—a systematic approach to inquiry that involves observation, hypothesis formation, experimentation, and analysis.

• Scientific thinking helps us understand natural processes and solve environmental problems.

Key Terms: Hypothesis, experiment, observation, data, analysis, conclusion.

Example: Testing whether increased carbon dioxide levels affect plant growth by conducting controlled experiments.

Environmental Science vs. Environmental Activism

Distinguishing Science from Advocacy

• Environmental Activism: A social or political movement aimed at raising awareness and driving change regarding human-induced environmental issues.

• Activism may use scientific evidence but is focused on advocacy and policy change, whereas environmental science is focused on understanding and explaining environmental phenomena.

Example: Scientists may publish data on climate change, while activists use this data to campaign for policy reforms.

Should Scientists Be Activists?

Objectivity and Advocacy in Science

• There is ongoing debate about whether scientists should engage in activism or remain impartial observers.

• Concerns include potential bias and the perception of objectivity in scientific research.

• Case Study: A scientist was dismissed after publicly advocating for climate action, raising questions about the role of scientists in public discourse.

Discussion Point: Should scientists use their expertise to advocate for change, or does this compromise their objectivity?

Is Science Objective?

Human Influence and Scientific Practice

• Science is conducted by humans, who are influenced by personal experiences and biases.

• Scientists strive for objectivity by:

  • Explicitly stating methods and assumptions

  • Allowing peer review and critique

  • Focusing criticism on data and methods, not individuals

Additional info: Objectivity is an ideal, but transparency and peer review help minimize bias.

Challenges in Learning Science

Student Perspectives and Strategies

• Scientific concepts may be counterintuitive, especially when studying non-human or non-living systems.

• Science uses precise terminology, which can be challenging but is essential for clear communication.

• Learning science requires referencing collective evidence, not just personal experience.

• Science is a collaborative, cumulative discipline that builds on prior knowledge.

Example: Using terms like "petiole" and "leaf blade" instead of vague descriptions improves scientific clarity.

Relevance of Environmental Science

Current Environmental Challenges

• Major environmental changes are occurring globally, such as climate change, biodiversity loss, and ecosystem disruption.

• Recent headlines highlight the urgency of these issues:

  • "Climate emergency" declared by over 11,000 scientists (Washington Post, 2019)

  • "The Insect Apocalypse Is Here" (New York Times, 2018)

  • Australian wildfires causing mass animal deaths (CNN, 2020)

• NASA data (2025): 2024 was the warmest year on record, illustrating ongoing climate change.

Global Environmental Change: Data and Trends

Observed Changes Since 1980

• Graphs from Ripple et al., Bioscience 2019 show trends in environmental indicators such as temperature, CO2 levels, and biodiversity loss.

• Human activities (e.g., fossil fuel use, deforestation) are major drivers of these changes.

Public Perception of Climate Change

• Surveys (Yale Program on Climate Change Communication) categorize Americans into six groups based on their views on global warming, from "Alarmed" to "Dismissive." The "Alarmed" group has grown significantly in recent years.

Group	Trend (2013-2023)
Alarmed	Increased from 13% to 28%
Cautious	Decreased from 26% to 15%
Other groups	Varied

Additional info: Understanding public opinion is important for effective science communication and policy-making.