Now playing Next USA President Trump makes second visit to Hurricane Harvey disaster zone President Trump has increased federal funds for cleanup operation on second visit to hurricane-hit Houston 02/09/2017
Now playing Next no comment Houston rescuers faced with fire and water Fighting fires when they are surrounded by water is proving a new challenge for Houston's stretched rescue workers. 02/09/2017
Now playing Next no comment Harvey rescue efforts continue as Texas evaluates cost of storm damage As rescue efforts continue in Texas in the wake of Hurricane Harvey, the costs mount. 02/09/2017
Now playing Next USA Search continues for Hurricane Harvey survivors Rescuers are searching painstakingly through flooded neighbourhoods across southeastern Texas for people stranded by Hurricane Harvey. 02/09/2017
Now playing Next world news Asia floods leaves millions homeless While all eyes have been on the havoc wreaked by Hurricane Harvey, more than 1,000 people have been killed as a result of devastating floods across Asia 01/09/2017
Now playing Next Economy Hurricane Harvey pushes up petrol prices, but 'economic outlook positive' The economic cost of Hurricane Harvey is, as yet, unknown, but forecasters predict it will ultimately have a positive impact on the economy. 01/09/2017
Now playing Next no comment Pastor plays piano in Texas floodwaters Pastor Harding plays piano in his flooded home in Texas to prove to his son that the instrument still works. 01/09/2017
Now playing Next Pakistan Thousands die in floods in Africa and Asia as climate change worsens With the media focus on the chaos wrought by Hurricane Harvey in the US, floods have killed many more people in Africa and Asia this year, as climate change worsens extreme weather worldwide. 01/09/2017
Now playing Next USA Colonies of fire ants float around flooded Texas streets What should you do when faced with a floating colony of fire ants? 31/08/2017
Now playing Next no comment Hurricane Harvey strands animals Animals stranded as Hurricane Harvey swamps Texas. 31/08/2017
Now playing Next no comment Stranded Texans rescued from Storm Harvey Stranded residents rescued from Storm Harvey. 31/08/2017
Now playing Next USA Harvey weakens to a tropical depression Harvey moves onto Louisiana but weakens to a tropical depression as it goes 30/08/2017
Now playing Next no comment Houston evacuation centre floods An evacuation shelter housing 100 people has been overran by Houston's floodwaters. 30/08/2017
Now playing Next USA Watch: Intrepid alligators swim in back garden of flood-hit Texas home 30/08/2017
Now playing Next USA Relentless Harvey brings more misery as it hits Louisiana After Houston, Harvey is now bearing down on eastern Texas and Louisiana 30/08/2017