Paramilitary policemen in an armored vehicle are on duty last month at the Hotan airport in western China's Xinjiang region. Photo: Ng Han Guan / AP

"China's efforts to snuff out a violent separatist movement by some members of the predominantly Muslim Uighur ethnic group have turned the autonomous region of Xinjiang ... into a laboratory for high-tech social controls that civil-liberties activists say the government wants to roll out across the country," The Wall Street Journal's Josh Chin and Clément Bürge write.

Why it matters: Zhu Shengwu, a Chinese human-rights lawyer who has worked on surveillance cases: "They constantly take lessons from the high-pressure rule they apply in Xinjiang and implement them in the east ... What happens in Xinjiang has bearing on the fate of all Chinese people."

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Updated 27 mins ago - Science

Florida braces for potential hurricane as Tropical Storm Isaias nears

Two men put shutters over the windows of their business in Stuart, Florida, as Tropical Storm Isaias approaches on Saturday. Photo: Joe Raedle/Getty Images

As Tropical Storm Isaias neared Florida's east coast Saturday, Gov. Ron DeSantis (R) urged communities to "remain vigilant and be prepared for heavy rain, strong winds and potential flooding."

The state of play: With the National Hurricane Center (NHC) warning that Isaias was expected to "regain hurricane strength" overnight, Florida evacuation orders were issued for the barrier islands and for those in mobile homes near the coast, effective 8 a.m. ET Sunday. North Carolina evacuations for Holden and Ocean Isle beaches and Hatteras and Ocracoke islands began Saturday evening.

In photos: Thousands ordered to evacuate as Southern California fire grows

A 747 Supertanker makes a retardant drop on a ridge at the Apple fire near Banning, California, on Saturday. Photo: Josh Edelson/AFP via Getty Images

Southern California officials ordered multiple mandatory evacuations as a growing wildfire burned across some 12,000 acres on Saturday, per CalFire.

The big picture: Some 7,800 people were under evacuation orders after the Apple fire in Riverside County, about 75 miles east of Los Angeles, "doubled in size" Saturday, reports KTLA, citing local officials. Hundreds of firefighters have been battling the blaze, but Riverside County Fire Department said in a statement Saturday night none of it had been contained.