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Brazilian authorities detained more than 1,000 people after protesters stormed the presidential palace.

It's really unclear where this movement is going. It's obviously a huge headache for Lula.

He's only been the president of Brazil for a week, and there are concerns now that he's going to have to put a lot of stuff on hold,

just as he tries to regain order in the country.

And the Earth's ozone layer is showing some remarkable signs of recovery.

Plus, South Party planners are trying to get guests into the mood.

It's Monday, January 9. I'm Amari for Tolley for the Wall Street Journal.

This is the PM edition of What's News, the top headlines and business stories that moved the world today.

We report exclusively that Southwest Airlines holiday travel season meltdown is prompting questions from a big investor with a history of activism.

New York State Comptroller Thomas Den Appelay, who oversees the state's pension system,

has asked Southwest how it will prevent future widespread failures and rebuild trust with its customers.

Den Appelay sent a letter on Friday to the airline's CEO, Bob Jordan.

Southwest did not immediately respond to questions about Den Appelay's letter, but a spokesperson says Southwest has taken steps to mitigate the risk of another disruption,

and is working to improve its crew scheduling platforms. Southwest canceled almost 17,000 flights from December 21 through December 31.

The Earth's ozone layer is recovering and growing thicker, thanks to a decline in airborne chemicals that destroy it, the first ever observed.

That's according to a report from the UN Environmental Program and the World Meteorological Organization,

which indicates international bands on ozone depleting chemicals in recent decades have paid off.

The ozone layer, which begins about nine miles above the Earth, blocks ultraviolet rays from reaching the planet's surface.

Those rays could lead to skin cancer, cataracts, and even harm crops and phytoplankton, an important part of ocean food webs.

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