The Truth About Chemtrails and Geoengineering
Clear science-based information on chemtrails, contrails, cloud seeding and geoengineering, with the aim of addressing common misconceptions.
We are Independent
This site is not sponsored or funded—contributors are volunteers who share a goal of providing reliable information to promote informed decisions.
Evidence Based Information
Relying on evidence-based information helps us separate fact from fiction, make smarter choices, and avoid unnecessary worry in a world full of misinformation.
Clarifying Misinformation
We clarify the differences between contrails, “chemtrails,” and practices like cloud seeding, offering balanced explanations to reduce confusion and build trust in science.
Chemtrails or Contrails
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What are Chemtrails
Chemtrails refers to a widely circulated conspiracy theory claiming that the white streaks left behind by high-altitude aircraft are actually chemicals deliberately sprayed into the atmosphere for purposes such as weather manipulation, population control, or geoengineering. There is no credible evidence supporting this claim.
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Cloud Seeding is Not Chemtrails
Cloud seeding and so-called “chemtrails” are fundamentally different, though often confused in conspiracy circles. Cloud seeding is a small-scale, scientifically documented technique in which aircraft introduce minute amounts of silver iodide into existing clouds to encourage rainfall; it does not involve spraying chemicals into clear skies, nor does it leave visible white streaks. Chemtrails.
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But Contrails Don’t Linger
Contrails can linger and spread because they are essentially man-made cirrus clouds formed from ice crystals at high altitude. A cloud is made of water vapour, just like a contrail. Therefore if a cloud can linger, so can a contrail. When an aircraft’s hot exhaust mixes with cold, humid air, the resulting condensation freezes, creating…
Geoengineering
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An Overview of Geoengineering
Geoengineering refers to deliberate, large-scale interventions in the Earth’s climate system designed to counteract the effects of global warming. It is generally divided into two main approaches: carbon dioxide removal (CDR), which aims to lower atmospheric CO₂ and solar radiation management (SRM). Neither are currently deployed at scale, and all raise significant uncertainties.
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British SRM Experiments Explained
The UK government, via its Advanced Research & Invention Agency (Aria), has launched a research programme worth approximately £56.8 million aimed at small-scale experiments in solar radiation management (SRM). These are explicitly not deployment: the studies are in experimental and modelling phases, with stringent oversight, assessments, and public/community consultations required before any outdoor trial moves…
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You Can’t Just Make Rain
It is impossible to manufacture rain, which depends on water vapour in the atmosphere. This is supplied by heat and evaporation from the Earth’s surface. Only when moist air cools and condenses into clouds is there potential for rain. Techniques such as cloud seeding cannot create this water; they can only encourage raindrops to form…
The Clouds Above
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Special & Accessory Clouds
Not all clouds fit neatly into the ten main genera. Some appear as distinctive features or as by-products of atmospheric processes. These forms provide visual evidence of atmospheric motion or turbulence and are important signals for weather observers and forecasters.
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Cirrocumulus Clouds
Cirrocumulus are small, finely textured clouds of ice crystals in a high layer, appearing as ripples or patchwork. They form under weak vertical motion. The term was formalised in 19th-century cloud atlases, and the “mackerel sky” phrase has long circulated in folk weather lore.
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Cirrus Clouds
Cirrus are high, ice-crystal, filamentous clouds forming in cold, moist upper tropospheric conditions. They act as harbingers of weather change. Named scientifically in the early 19th century by Luke Howard, they have long been used in art and poetry to evoke sky texture.