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1. Sales of air purifiers at some stores in Ho Chi Minh City jumped 200% last month.

2. She did not want her son to breathe in this kind of air," Hung told VnExpress International as he waited for his friend at the university gate, wearing a mask.

3. An expert who asked not to be named said launching a new ride-hailing app at a time when the market is relatively saturated is a daunting task.

4. Ton Duc Thang ranked 83rd on the list of 912 most sustainable educational institutes in the world, according to the annual ranking that examines carbon footprint reduction and climate change efforts at global universities.

5. "A total of 34 bodies were found by the team," Indonesia Red Cross spokeswoman Aulia Arriani told AFP Tuesday, adding that 86 students had initially been reported missing from a Bible camp at the Jonooge Church Training Center in Sigi Biromaru district.

6. Participants at high risk of sleeping more than six hours faced a ratio of 1.

7. Experts recommend that adults get at least seven to eight hours of sleep each night.

8. With a consumer confidence index of 117 points, the country ranked behind only India at 123, the survey by market research company Nielsen found.

9. In another, a Japanese man was controversially found to have fostered at least 15 babies with surrogates.

10. In what could be called one of the most brazen negligence in medical history, surgeons at a hospital in Hanoi have operated on the wrong leg of a patient.