Watch Randi Belisomo and Mary Mulcahy talk about the importance of having end-of-life discussions with your loved ones on WTTW's Chicago Tonight. Tell us what you think. E-mail comments or questions ...

You may have heard about the university lab accident at Texas Tech, fatal firework accident in Hawaii, and natural gas explosion at ConAgra plant. Dr. Mary Beth Mulcahy of the US Chemical Safety Board ...