Related Experiment Video
Updated: May 22, 2026
06:10
Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
Climate change: the evidence and our options
1The Ohio State University.
The Behavior Analyst
|April 26, 2012
Summary
Global glacier melt, especially in low-latitude regions, provides strong evidence of rapid climate change. Ice core data reveal current warming is unusual, urging action on greenhouse gas emissions.
Area of Science:
- * Climate Science
- * Glaciology
- * Paleoclimatology
Background:
- * Glaciers act as sensitive indicators of global climate change.
- * Widespread melting of high-elevation glaciers and ice caps is observed, particularly in low to middle latitudes.
- * This melting provides critical evidence for a large-scale, pervasive, and potentially rapid shift in Earth's climate system.
Purpose of the Study:
- * To highlight observations of glacier shrinkage in the 20th and 21st centuries.
- * To present evidence from ice cores indicating current climatic conditions differ from historical norms.
- * To underscore the unusual nature of current warming trends from a millennial perspective.
Main Methods:
- * Analysis of ice-core records from polar regions and low-latitude high-elevation ice fields across 16 countries.
- * Examination of climatic and environmental variations preserved in ice cores.
- * Comparison of current temperature records with long-term proxy evidence from ice cores.
Main Results:
- * Observations confirm significant glacier shrinkage in regions like the Andes, Himalayas, and Mount Kilimanjaro.
- * Ice cores from shrinking glaciers indicate they have existed for hundreds to millennia, suggesting a departure from past climate regimes.
- * Current warming trends are confirmed as unusual when compared to millennial-scale climate reconstructions and direct temperature measurements.
Conclusions:
- * The current rate of global warming, evidenced by glacier melt, is historically significant and unusual.
- * Despite clear evidence and rising greenhouse gas concentrations, societal action to mitigate climate change remains insufficient.
- * Societies face critical choices between mitigation, adaptation, and suffering due to continued inaction on emissions.
Related Concept Videos
01:50Global Climate Change
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
01:16What is Climate?
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
01:27Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
01:57Adaptations that Reduce Water Loss
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
01:50Threats to Biodiversity
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
02:45Responses to Heat and Cold Stress
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.