Parts of South Korea and Japan have had short rainy seasons this year. Scientists say that climate change has helped make the summer rains more unreliable.
The authorities confirmed that 20 girls were still missing as a result of the flooding along the Guadalupe River, but the full scope of the disaster was not clear.
Municipal workers in the South Korean capital region are responding to a summer infestation by spraying water, but residents wish they would break out the poison.