TRAGEDYItaly bridge collapse kills 39, race to find survivors
FLASH FLOODSEvacuations, rescues as 'historic' floods hit the Northeast
CLIMATEEl Niño likely setting up for a winter comeback
Could a hurricane be the cause of Florida's red tide?
Record hot summer helps unearth British archaeological sites
How to protect your children from wildfire smoke
It took 11 months to restore electricity to Puerto Rico