by Andrew BEATTY Agence France-Presse SYDNEY, Australia (AFP) — Airlines worldwide face an unprecedented existential threat as the coronavirus shuts down global travel, leaving governments with controversial and costly decisions about which carriers to bail out. A toxic mix of fear, crippling travel bans and investor panic have pummeled the sector, with demand collapsing and carriers cutting flight capacity by up to 90 percent. One troubled airline, Britain’s Flybe, has already gone to the wall and […]