A bitter cold front has swept across Bangladesh and northern India, killing hundreds of people in the past 10 days.
Most of the dead are poor people who cannot afford heating devices or warm clothing.
The Indian states of Uttar Pradesh and Bihar have been the hardest hit. In those states, officials say public buildings are being used to shelter the homeless. Authorities have been ordered to light public bonfires to keep people warm.
Officials say the cold weather has also brought on dense fog that has caused many flight and train delays.
Weather experts say temperatures in some parts of the region have fallen to three degrees Celsius (about 37 degrees Fahrenheit). They expect the cold temperatures to continue for a few more days.