On today's podcast:
1) Donald Trump’s threat to impose 50% tariffs on Brazilian goods sent the country’s currency plunging as the US leader sharply escalated a dispute with Latin America’s largest nation and leftist leader Luiz Inacio Lula da Silva.

 
2) Crews in central Texas are digging through massive piles of debris, overturned vehicles and shattered homes for a sixth day as the search continues for victims of flash floods that killed more than 100 people over the Fourth of July weekend.

3) Nvidia Corp. became the first company in history to achieve a $4 trillion market valuation, cementing its status as a kingpin in the global financial market.