【加拿大西部山火蔓延】
加拿大西部山火产生的烟霾笼罩埃德蒙顿市，艾伯塔省。5月12日，加拿大西部艾伯塔省山火进一步蔓延，过火面积扩大至6579公顷。当地政府已向约3500名居民发布紧急疏散令，投入6支消防队、13架直升机和空中加油机参与救火。该省首府埃德蒙顿市因山火烟霾影响出现严重空气污染，空气质量健康指数（AQHI）达到10级高风险级别。 source
BY 每日环球视野
Telegram is riding high, adding tens of million of users this year. Now the bill is coming due.Telegram is one of the few significant social-media challengers to Facebook Inc., FB -1.90% on a trajectory toward one billion users active each month by the end of 2022, up from roughly 550 million today.
Telegram is a cloud-based instant messaging service that has been making rounds as a popular option for those who wish to keep their messages secure. Telegram boasts a collection of different features, but it’s best known for its ability to secure messages and media by encrypting them during transit; this prevents third-parties from snooping on messages easily. Let’s take a look at what Telegram can do and why you might want to use it.
每日环球视野 from us