Smog 'blanket' returns to Russian capital Moscow
Moscow has been covered in a blanket of smog for the second time in a month, as the smoke from forest fires across Russia returned to the capital on Sunday.
Doctors say the smog can cause breathing difficulties, and many have struggled to cope with the scorching high temperatures and smog.
But meteorologists are predicting rain on Monday, which could finally clear the polluted air.
Jack Izzard reports.