After 16,700 flight cancellations that cost the airline over $800 million, blame has fallen on an outmoded crew scheduling system and an unusual point-to-point route network.

The failure to foresee the surge in inflation coming out of the pandemic has led forecasters to question the models they use to try to understand the economy.

The power grid operator had to dip into reserves as an Arctic blast swept across a large swath of the U.S. and Canada, necessitating controlled power outages elsewhere.