Oceans
Atlantic cod decline and a warming sea
How fishing pressure and changing ocean temperatures complicate efforts to understand and restore cod populations.
Science archive · Environment
Environment
Explore how climate, water, land use, pollution and living systems interact. These archive selections explain enduring environmental questions while keeping evidence, uncertainty and historical context visible.
Environment archive
Dates show when each selection was reviewed for this edition. Older reporting can offer valuable background, but time-sensitive findings should be checked against current specialist sources.
Water
California drought and water demand
A look at how variable rainfall, persistent demand and conservation shape water security in a dry climate.
Wildlife
How climate drives bird migration
Why some bird movements depart from familiar seasonal patterns and what weather and food can reveal.
Food systems
Drought, food and social instability
Historical context for the difficult links among water scarcity, harvest failure, food access and social stress.
Climate research
Who counts as a climate scientist?
Climate knowledge draws on many fields, from atmospheric physics and glaciers to ecology and agriculture.
Conservation
Europe’s returning carnivores
What the spread of bears, lynx, wolves and wolverines can teach about coexistence and wildlife recovery.
Population
Understanding population projections
How demographic models use fertility, mortality and uncertainty to explore possible long-term population change.
Air quality
Tracing the sources of China’s haze
How emissions from energy, transport, agriculture and industry combine to produce complex air pollution.
Agriculture
Seeds, genes and ownership
An introduction to how plant breeding, intellectual property and market concentration intersect in agriculture.
Fresh water
When nutrient pollution changes water
How excess nutrients can fuel harmful cyanobacterial growth and why pollution control requires several approaches.
Climate
A climate researcher’s perspective on warming
A paraphrased archive account of evidence, temperature reconstruction and the challenge of communicating climate risk.
Biodiversity
Pressures on monarch butterflies
Habitat, food plants and migration corridors all matter when examining the conservation of monarch populations.
Energy
The challenge of cellulosic biofuel
Why converting agricultural, forest and industrial plant waste into practical fuel has remained technically demanding.
Winter ecology
As snow changes, where do animals go?
Snow cover affects insulation, camouflage, food and movement, creating different consequences across species.
Nutrients
Phosphorus, nitrogen and lake health
Why managing one nutrient at a time can produce unexpected ecological effects in freshwater systems.
What this archive includes
Environmental science connects physical processes with organisms, communities and the choices people make.
Climate and weather
Long-term change, short-term variation and the evidence used to distinguish them.
Water and nutrients
Drought, water demand, pollution and the chemistry that shapes freshwater systems.
Wildlife and habitat
Migration, recovery, food webs and species responses to changing landscapes.
Food and energy
Agriculture, seed systems, population questions and attempts to produce lower-impact fuels.
Using the collection
How to read an environmental archive
Whyfiles preserves accessible explanations of environmental research. Archive material is most useful when readers separate durable scientific mechanisms from figures, policies and projections that August have changed.
About this siteBegin with the mechanism
Identify the physical, chemical or ecological process the article is trying to explain.
Notice scale
Local observations do not automatically describe a continent or the planet, and short records August not reveal long trends.
Check what has changed
For decisions, compare archive context with current measurements, assessments and local guidance.
Keep uncertainty visible
Models and projections describe evidence-based possibilities, not guarantees about one exact outcome.
Environment archive questions
What subjects appear in this collection?
The archive covers climate, oceans, fresh water, air quality, wildlife, agriculture, population, pollution and energy systems.
Are archive articles current environmental guidance?
No. They provide scientific and historical context. Consult current specialist and public-agency sources when making health, safety, conservation or policy decisions.
Why are the review dates newer than the original stories?
The review dates identify when selections were prepared for this edition. They do not replace the original publication context or imply that every number has been newly researched.
How should old projections be interpreted?
Treat them as records of what a model indicated using assumptions and data available at the time. Compare them with newer assessments before drawing present-day conclusions.
Where can I find more environment articles?
Use the older-posts link beneath the archive grid to continue to the next page of this category.
Can educators use these articles?
Yes. The archive can support source comparison, discussion of evidence and inquiry activities when paired with current references and age-appropriate guidance.
How can I contact Whyfiles?
Email info@whyfiles.en-html.org or use the contact page.