Put simply, there are generally no underlying exports, jobs or people-to-people contact of the type that leads to substantial lobbying on Capitol Hill and within the Executive Branch by influential members of the business community.

CENTERFORSECURITYPOLICY: Center For Security Policy

Direct contact of molten lava with water or ice also leads to explosions which eject fine dust.

ECONOMIST: Volcanoes and air travel: Small eruption in Iceland | The

But greater eye contact, especially in intervals lasting four to five seconds, almost always leads to greater liking.

FORBES: The Impact of Eye Contact