Earthquakes shook California this week. More could come, but predicting them isn’t easy.

California’s largest earthquake in decades rattled homes, damaged buildings and led to widespread power outages on the Fourth of July — before being followed up by an even larger quake on Friday night.

On Thursday, a 6.4 magnitude earthquake hit southeastern California. Its epicenter was in Ridgecrest, a city of fewer than 30,000 people about 150 miles north of Los Angeles. The following night, a 7.1 magnitude earthquake led to structural fires and injuries, but no fatalities.

Although tremors were felt as far away as Las Vegas and Mexico, Ridgecrest’s relatively remote location may have helped contain the worst …

Border Patrol leadership reportedly knew about derogatory Facebook group for years

Top officials at US Customs and Border Patrol reportedly knew about a Facebook group in which current and former agents routinely posted derogatory, inflammatory, and sometimes violent memes years before the group became public knowledge following a report by A.C. Thompson at ProPublica. That group may also not be the only one of its kind, according to reporting that found a second, smaller, but similar Facebook group.

An investigation by ProPublica earlier this week revealed that some 9,500 border patrol agents were part of a secret Facebook group where they shared sexist and racist memes, joked about the deaths …

Vox Sentences: Turning off the red lights

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Sudan’s military and civilian leaders reach a power-sharing deal; Amsterdam’s first female mayor wants to reform the city’s red light district.

Sudanese military and protesters strike a deal

Bo Rader/Wichita Eagle/MCT via Getty Images
  • After a weeks-long standoff, riddled with violent crackdowns on protests, Sudan’s ruling military council and pro-democracy civilian leaders have reached a power-sharing deal. [WSJ / Nicholas Bariyo]