04.10.2025

In partnership with

Tariff Seesaw

China announced new retaliatory tariffs of 84% against US imports early Wednesday in response to the Trump administration’s 104% tariff on Chinese imports. The escalation came as Trump announced a 90-day pause on most tariffs over 10%—excluding China—later in the day, sparking markets to historic rallies. Trump also increased China’s tariffs to 125%.

The tariff pause came amid warnings from economists—including JPMorgan CEO Jamie Dimon—that the broad tariff program would lead to a recession (tariffs 101). Since last week’s announcement of increased tariffs on more than 75 nations, the S&P 500 had entered bear market territory, having shed nearly 20% off its recent high, while all US-listed stocks dropped $7.7T in value. 

Stocks popped on the reversal (S&P 500 +9.5%, Dow +7.9%, Nasdaq +12.2%), with the S&P 500 notching its biggest single-day gain since 2008. 

In related news, Richmond Fed President Tom Barkin said yesterday that price hikes from tariffs may not arrive until the summer as companies work through existing inventory. See how tariffs are implemented here.

Editor's note: Want to go deeper on tariffs, markets, and more? Sign up for 1440 Business & Finance—hitting inboxes every Thursday morning.

Galaxy Brain

Scientists released a colored 3D reconstruction of the largest mammalian brain map ever yesterday, providing a significant step forward in understanding how the brain works.

Using just a cubic millimeter of neural tissue—about the size of a grain of sand—from a mouse’s brain, researchers charted the activity and structure of 200,000 neurons and other types of brain cells, along with 523 million neural connections, and produced data equivalent to 22 years of nonstop HD video. To obtain the data, the team played stimulating short video clips for the rodent, including scenes from "The Matrix," and used a sophisticated imaging system to track the animal’s brain activity patterns in its visual cortex. Their findings—compiled into a map resembling a galaxy—allow researchers to decode and discover patterns in the brain's wiring that impact functions like seeing, storing, and processing information. 

Neuroscientists hope the findings can be generalized to humans and help to study and create treatments for brain diseases associated with atypical wiring, including autism and schizophrenia.

One Hundred Years of Gatsby

F. Scott Fitzgerald’s “The Great Gatsby” marks its 100th anniversary today as a cornerstone of classic American literature. Initially a commercial disappointment—selling fewer than 25,000 copies during his lifetime—it gained traction during World War II through military distribution. Since then, it has sold over 30 million copies worldwide and remains a staple in high school curricula.

Set in 1922 Long Island and New York City, the novel explores the illusion of the American dream through Jay Gatsby’s doomed pursuit of wealth and love. Inspired by Fitzgerald’s youthful romance with socialite Ginevra King and his time on Long Island’s North Shore during the Jazz Age, its themes of aspiration, class divides, and moral decay remain relevant to readers today. Now in the public domain, it has inspired at least four feature films, several TV episodes, an opera, two musicals, and more.

Centennial celebrations include a Broadway toast, a Library of Congress reading, and the Empire State Building being illuminated in green—a nod to Gatsby’s iconic symbol of hope.

In partnership with RAD Intel

From Under the Radar to Industry Essential

In partnership with RAD Intel

The Algorithm Is Tired Too

You’ve seen them: The ads that feel like they were written by a robot raised on infomercials. RAD Intel’s AI fixes that. It tells brands why certain content hits, who it resonates with, and what to say next. 

Hasbro, MGM, and Skechers are in. So are 6,000+ investors—backed by Adobe, Fidelity, and insiders from Google and Meta. This is your shot to get in early. Pre-IPO at $0.55/share; the price changes after 4/10.*

Please support our sponsors!