Several parts of the world have been hit by heavy floods, including south-eastern Brazil - where so far more than 350 people have been killed.
More than a month's worth of rain fell in one day, cutting off towns and villages near Rio de Janeiro. In this photo, rescue workers take people in flooded Franco da Rocha to safety.
The rain started early on Thursday and triggered lots of mudslides. In the mountain town of Teresopolis, cars, homes and trees have been swept away.
People cross a street in Teresopolis that was hit by a landslide. More than 800 rescuers are out searching for survivors.
In Sri Lanka in south Asia, more than 325,000 people have had to leave their homes because of floods caused by days of heavy rain.
Flood victims load their belongings onto a boat in Batticaloa. The big challenge now for emergency workers is getting urgent aid to the people affected.
In Australia, the flooding in Queensland has hit the country's third largest city, Brisbane. More than 30 suburbs have been left underwater.
Experts think the floods in Australia and Sri Lanka are caused by something called La Nina. More warm, moist air from the Pacific is being blown east - causing more rainfall than normal.
Water levels in the Brisbane River are now going back down again after hitting a peak of 4.46m on Wednesday. But officials reckon the clean-up operation could take months.