The Trump administration lacks a clear explanation of its tariffs strategy as global markets show signs of worry. The director of the National Security Agency and his deputy are fired. And scientists believe the key to understanding the evolution of human language can be found in one type of great ape.

Here’s what to know today.

President Donald Trump’s sweeping tariffs have been met with confusion, uncertainty and fear since his big announcement Wednesday afternoon. The 10% baseline tariff on virtually every country — and higher numbers on countries with which the U.S. has larger trade deficits — now leaves his Republican supporters trying to thread the political needle of not criticizing him while also understanding the economic peril the tariff plan may cause.

So far, Trump’s team has not had a clear message to either explain the strategy behind the tariffs or his thought process behind the decision to go much further than his supporters expected.

Some elements of the measures raised questions about the process behind their development, including the decision to levy tariffs on uninhabited lands, such as Heard Island and McDonald Islands, which has no human residents.

The White House has said the tariffs were not a negotiating tool, but that notion has been contradicted by Trump’s economic advisers and even Trump himself.

The uncertainty has left global markets in turmoil. Wall Street on Thursday saw its worst day since the depths of the pandemic, with nearly $2 trillion wiped out from the S&P 500. The Dow Jones Industrial Average and tech-heavy Nasdaq didn’t fare well, either. The rout could be read as a harsh early verdict on Trump’s tariff plan. Analysts are increasingly raising alarms about the potential for recession.

But Trump’s most staunch congressional allies are still expressing their support, albeit with caveats. “If they make things better, they should want more,” Sen. John Kennedy said. “If it makes things worse, they should want to recalibrate. If the tariffs end up hurting America, I think you’ll see President Trump recalibrate.”

The director and the No. 2 official at the National Security Agency were ousted from their positions this week, according to a defense official and three sources with knowledge of the matter, but it wasn’t immediately clear why they were dismissed. Air Force Gen. Timothy Haugh was both the director of the NSA and the head of the U.S. Cyber Command. Deputy NSA Director Wendy Noble was the agency’s senior civilian leader. Both are career officials.

Last month, Elon Musk visited the NSA’s headquarters and met with Haugh after Musk had remarked on X that “the NSA needs an overhaul.”

Congressional Democrats criticized the Trump administration over the firings. Rep. Jim Hines, the top Democrat on the House Intelligence Committee, said the firings “makes us all of us less safe.” Sen. Mark Warner, the ranking Democrat on the Senate Intelligence Community, called Haugh’s removal “astonishing.”

The women's Final Four is kicking off today in Tampa, Florida. Top-seeded South Carolina will face fellow top seed Texas, and top overall seed UCLA will battle No. 2 Connecticut, which is eyeing its first title since 2016. The winners will face off in the championship game on Sunday. Sports reporters and share which players they’re watching closely and title predictions:

Connecticut’s Paige Bueckers. She’s had a roller-coaster collegiate career, essentially having two seasons, one partly and one entirely, ruined by injury. In her senior go-around with the Huskies, she has remained a talented and efficient scorer while also being the playmaker her team desperately needs.

UCLA’s Lauren Betts. The 6-foot-7 center is the national defensive player of the year because she is able to not only guard post players but also stifle wings. Oh, and she’s putting up 23 points and nearly 10 rebounds per game in the tournament.

 Connecticut defeats UCLA 75-70 and South Carolina defeats Texas 60-58 in the Final Four, and Connecticut wins the national championship 71-67 versus South Carolina.

 South Carolina defeats Texas 71-56 and Connecticut defeats UCLA 75-70 in the Final Four, and Connecticut wins the national championship 67-60.

Bonobos — the closest living genetic relative to humans — make all kinds of interesting noises like hoots, peeps and grunts. In new research, scientists say they’ve discovered that bonobos can combine different vocalizations together in ways that alter each sounds’ individual meanings, allowing the great apes to form more complex phrases in ways that mirror elements of human language. The research challenges the prevailing thought that humans are the only species with this ability, and researchers think further study of bonobos could . — science reporter

The Nintendo Switch 2 was unveiled this week, and it looks to be bigger and faster than its predecessor. NBC Select reporter Harry Rabinowitz dishes on the launch date and new games to expect. Plus, the Select team gets the scoop on mushroom coffee, a low-caffeine alternative to standard coffee and a growing wellness trend.

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This article was originally published on NBCNews.com