this year we've seen wildfires on the west coast, heavy rain and flooding destroying homes in the east. experts say these extreme events are the result of climate change and global warming, adding fuel to disasters like this week's quad-state tornado which killed dozens of people and broke records at an unusual time of year for storms like this to strike. joining me right now is brenda, a senior climate scientist from the union of concerned scientists. officials say this weekend's tornado traveled something crazy, more than 200 miles over the course of two hours. it could set the record for the longest continuous tornado in american history. first off, how rare is it to see