An online dictionary states the following:
noun: cloud seeding
the dropping of crystals into clouds to cause rain.
chemtrails
What is a contrail?
An online dictionary states the following:
noun North American
a trail of condensed water from an aircraft or rocket at high altitude, seen as a white streak against the sky; a vapour trail.
What is a chemtrail?
An online dictionary states the following:
noun: chemtrail
a visible trail left in the sky by an aircraft and believed by some to consist of chemical or biological agents released as part of a covert operation, rather than the condensed water of a vapour trail.
What is geo-engineering?
An online dictionary states the following:
noun: geo-engineering
the deliberate large-scale manipulation of an environmental process that affects the earth’s climate, in an attempt to counteract the effects of global warming.