Up to 10 inches (25 centimeters) of rain fell over 24 hours in parts of Texas, prompting numerous evacuations and rescues overnight and into Sunday, while a firefighter in northeast Oklahoma died after being swept away in floodwaters.
The death toll in Chile rose to four after rains battered the north and caused flooding, the government said on Thursday, while 22 others were unaccounted for as the military rescued stranded villagers.
In a significant find, scientists have identified the mechanism used by plants in stress conditions to sense low oxygen levels that may lead to the introduction of cereal crops better able to tolerate flooding.
A new study has revealed that an immediate action is needed to be taken as the world's deltas that accommodate major cities such as Shanghai, Dhaka and Bangkok will be drowned in the next century by rising sea levels.
The number of people dying of cholera outbreak has reached 27 in South Sudanese capital of Juba with suspected cases turning more than double from 395 cases last week to 892, the UN humanitarian agency said Saturday.