juliet bremner, itv news.en >> sasan: two days after a series of gas explosions killed one person and injured dozens in towns north of boston, investigators are still trying to find the cause. ousands of residents wer evacuated on thursday during the explosions and fires in lawrence, andover and north andove firefighters, utility crews, and a national transportation safety board team are still oe, and massachusetts governor charlie baker has decled a state of emergency in the area. some sections of the natural gas pipeline system in massachusetts date back to the 1860s. >> sreenivasan: the threat of storms like florence, or harvey and mari has not stopped people from building along the coast. but some national home insurance companies have taken pause and have been pulling out od- prone coastal areas. some areas are turning to government-subsidized flood n't meetnsurance demandsndse are om super-storms. joining me now is talia buford who reports on the environment and civil and human rights for "pro publica" and is also co- chst of the pbs digital studios climatge program "hot mess."