Hello and welcome to NewsHour from the BBC World Service.
We're coming to you live from London.
I'm Sean Lay.
On the day the world's leaders gather in Brazil ahead of the latest climate summit,
a reminder of the powerful natural forces which any debate about the global climate must contend with.
Typhoon Calmiga made landfall in Vietnam late Thursday local time,
with winds of up to 149 kilometres an hour.
No individual weather event could be attributed to climate change,
but scientists say storms are likely to be more frequent and more intense as a result of the warming of the planet.
The typhoon had already gouged a destructive path through the islands which make up the Philippines.
Mud and debris slid down mountainside, swamping entire towns on Cebu.
This woman has lost her whole family.
I lost my three children.
Husband, mother, father, my sibling's child, two of my cousin's children and my cousin's mother.
We were all together on the roof.
The roof collapsed.
We all fell and were washed away.
Only four of us survived.
My husband is now dead.
The BBC's Jonathan Head has the latest.