PHUKET, Thailand, Jan 22 — Hitting the white sand beaches and eating mango sticky rice and seafood, Chinese tourists are returning to Thailand for their first trips abroad since China ended its strict Covid-19 curbs and reopened its borders.

KUALA LUMPUR, June 8 — When was the last time the ventilation and air-conditioning system in your workplace was serviced? The issue pertaining to the proper maintenance of indoor cooling and ventilation systems has become all the more pertinent now in the wake of international scientific proof...