Heavy smog in northern China caused the closure of several highways and hundreds of flights Sunday.

Chinese journalist Wang Xiaolu has been arrested and has “confessed” to causing the stock market to crash in what the nation is calling its “Black Monday” last week. State media outlet Xinhua reports that nearly 200 others were also arrested for “causing panic” by “spreading rumors” in publications or on social media.

China’s government announced earlier this week that it had arrested 15,000 people for an assortment of cybercrimes, the result of a project announced in July titled “Cleaning the Internet.”

Residents of Tianjin, China are reporting on social media the emergence of a strange foam throughout its streets following the first rainfall since a massive chemical explosion destroyed much of the city. Chinese officials are claiming the foam is safe, while announcing that at least ten corporate executives are being “controlled” for an investigation into the blast.

Contents: A train station in Macedonia becomes the new European migrant choke point; Surging numbers of migrants on EU borders; Chinese fear thunderstorms will bring new explosions and death in Tianjin

Contents: Thunderstorms in Tianjin China may release hydrogen cyanide Report: Comprehensive Hamas – Israel peace agreement is ‘imminent’; Perpetrator unknown for bombing in downtown Bangkok Thailand

The Chinese government has ramped up censorship operations in light of the massive chemical explosion in Tianjin, publishing a report in which they accuse fifty websites of “creating panic” by “publishing unverified information” about the nature of the blast and the company storing the chemicals that exploded.

Contents: Suicide attack in Pakistan means no politician is safe; Tianjin explosion poses new threats to China’s government

The Chinese government is censoring media and citizen coverage of the deadly explosion in Tianjin. Reports are circulating of Weibo accounts critical of Chinese media being shut down, and CNN’s Will Ripley was forced off the air by angry alleged relatives of victims.

Contents: Massive explosion in Tianjin highlights China’s dismal industrial safety record; Greece’s island Kos moves to center of Europe’s migrant crisis

Video and photographs of a massive explosion in Tianjin, China, have begun surfacing on Twitter, Sina Weibo, and other social media sites as authorities scramble to find the cause of the explosion and those caught in proximity to the fire, whose cause appears still unknown.