Could this be a reason for global warming oceans rising, glaciers melting, storms etc. Comets and Meteor's are constantly hitting the atmosphere but most times get burned up on entry some make it through causing tide changes and sun variations but it is becoming more frequent.
none recently have been big as ison, i could be wrong wasnt it a few months back that a comet or meteor passed 90,000 miles from us?
are u suggest a single comet does all these things? i doubt the single comet does that, im just talking about ison