Climate and environment
The climate system, energy, and the human effect on both.
The climate is a system of moving heat and water. These pages cover how it works, how it is changing, and what the measurements show.
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Climate change
Human-caused changes to climate on Earth
Present-day climate change includes both global warming—the ongoing increase in global average temperature—and its wider effects on Earth's climate system. In a broader sense, climate change also includes previous long-term changes to Earth's climate. The mode…
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Greenhouse effect
Atmospheric heat retention
The greenhouse effect occurs when heat-trapping gases in a planet's atmosphere prevent the planet from losing heat to space, raising its surface temperature. Surface heating can happen from an internal heat source or come from an external source, such as a hos…
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Renewable energy
Energy collected from renewable resources
Renewable energy is energy made from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, bioenergy/biomass, and hydropower. Bioenergy and geothermal power are also sig…
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Monsoon
Seasonal changes in atmospheric circulation and precipitation
A monsoon is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation, but now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropic…
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Related topics
- Geography of India — Rivers, mountains, states, climate and the land itself.
- Science — Biology, chemistry and physics — how the natural world actually works.
Where this comes from
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