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Global Climate Change01:50

Global 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.
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Threats to Biodiversity01:50

Threats 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...
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What is Climate?01:16

What 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.
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What is Weather?01:07

What is Weather?

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Mass Extinction01:17

Mass Extinction

Mass ExtinctionMass extinction occurs when many species disappear from Earth in a short period. Throughout Earth’s history, five major mass extinctions have been caused by asteroid impacts, volcanic eruptions, or sudden climate changes. These events drastically reduced biodiversity and led to the evolution of new species over time. Today, scientists believe we are facing a possible sixth mass extinction, driven by human activities such as deforestation, pollution, climate change, and habitat...
Patterns of Energy Consumption01:27

Patterns of Energy Consumption

Patterns of Energy ConsumptionEnergy consumption refers to the way people and countries use energy for daily activities such as heating, transportation, manufacturing, and technology. Patterns of energy use vary worldwide based on factors like population size, industrial development, climate, and access to resources. By studying these patterns, we can understand how energy is used, identify which sources are relied on the most, and explore how energy use impacts the environment.Energy...