claim: This means the jet stream meanders more, with big loops bringing warm air to the frozen north and cold air into warmer southern climes.”
evidence: The presence of methane, a powerful greenhouse gas, in Pluto's atmosphere creates a temperature inversion, with the average temperature of its atmosphere tens of degrees warmer than its surface, though observations by New Horizons have revealed Pluto's upper atmosphere to be far colder than expected (70 K, as opposed to about 100 K).