President Trump has effectively started a trade war with China—as well as other countries—by imposing tariffs on metal imports from Europe, Canada, and Mexico. These countries are fighting the U.S. trade war, with China focusing on American-made goods like beef, poultry, tobacco, and cars.

Tim Cook worries that Apple could be collateral damage. Last month he visited the White House to warn the president that Apple’s position in China could be threatened by tough measures coming out of the U.S. The New York Times notes:

In a trade and technology showdown between the United States and China, Apple and Mr. Cook have a lot to lose. With 41 stores and hundreds of millions of iPhones sold in the country, there is arguably no American company in China as successful, as high-profile and with as big a target on its back.

FastCoDesign shared an interesting visual tool that shows what your city looked like up to 750 million years ago. It’s called Ancient Earth. You enter your address, click on the menu to pick the age, then it instantly shows how the land mass looked.

Earth was a completely different planet 240 million years ago. Back then we had Pangea, a mashup of a supercontinent formed by older continental units and surrounded by water. Then, around 175 million years ago, magma pushed this landmass’s tectonic plates in different directions, slowly forming the continents we know today.

Fun fact: Mar-a-Lago has always been a swamp–and L.A. traffic has always been crap. True story, folks.