From the BBC World Service: Tech billionaire Elon Musk has picked a fight with Michael O'Leary, the chief executive of Ryanair; after O'Leary said Ryanair wouldn't be offering Musk's Starlink satellite services, Musk floated the idea of buying Ryanair himself. Plus, Lufthansa — one of the world’s largest airline groups — says that airspace closures due to war zones are forcing substantial rerouting of flights, with the ban on using Russian and Ukrainian airspace creating detours of one to two hours.

Today is the second day of the World Economic Forum meeting in Davos, Switzerland. It's a meeting that attracts some of the world's most powerful people (and often protests). Among the biggest names are the heads of Microsoft and Nvidia, the chancellor of Germany, and — after a six-year in-person absence — President Donald Trump is returning to the forum. We'll outline what to expect. But first: a discussion of housing and tariffs.

The Supreme Court will hear oral arguments tomorrow in the case around President Donald Trump's bid to fire Federal Reserve Governor Lisa Cook over mortgage fraud allegations. Cook denies any wrongdoing, and she hasn't been charged with any crime. Federal Reserve Chair Jerome Powell is set to attend tomorrow's session. We hear about the case at hand and what's at stake. But first, we hear why houses in some areas could get more affordable this year.