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getting started. >> dana: let's get to alexis mcadams live at newark airport in new jersey. how is it going? >> not so bad right now. a lot better than it has been since saturday and sunday where some of the people i've been talking to have been sleeping at the floor at airports across the east coast trying to get home. we checked with airlines to see how they are doing. things aren't back to 100% and entering the busy time for the july 4th holiday weekend. as we mentioned people have not had anywhere to go except sleep on the floor. >> six hours, not even a bottle of water. >> frust...

stephen cave, welcome to hardtalk. thank you for having me. it's a great pleasure. you believe that our human awareness of our own mortality is absolutely central to the human story. why? well, all creatures strive to live on, to keep going. they would not be around us any more if they did not. they wouldn't be around us any more if they didn't. the mouse that didn't care about surviving wouldn't pass on its genes. so we come for from a long line of creatures that are determined to keep going, but we have these big brains — that's part of our survival mechanism, if you like — tha...

which is straight after this programme. welcome to hardtalk. i'm stephen sackur. one of the key drivers of human thought and behaviour throughout history has been knowledge of our own mortality. from childhood each of us knows we will die. religion, philosophy and science all wrestle with that fact and have in different ways embraced the quest for immortality. my guess today, stephen cave, director of the cambridge institute for technology and humanity is at the centre of a growing debate about the merits of extending human longevity. is it wise to seek to live forever? stephen cave,...

stephen cave, welcome to hardtalk. thank you for having me. it's a great pleasure. you believe that our human awareness of our own mortality is absolutely central to the human story. why? well, all creatures strive to live on, to keep going. they wouldn't be around us any more if they didn't. the mouse that didn't care about surviving wouldn't pass on its genes. so we come from a long line of creatures that are determined to keep going. but we have these big brains, that's part of our survival mechanism, if you like, that allow us to see the future, to generalise. and we're conscious...

of our own mortality is absolutely central to the human story. why? well, all creatures strive to live on, to keep going. they wouldn't be around us any more if they didn't. the mouse that didn't care about surviving wouldn't pass on its genes. so we come from a long line of creatures that are determined to keep going. but we have these big brains, that's part of our survival mechanism, if you like, that allow us to see the future, to generalise. and we're conscious of ourselves as individuals, and that means we're conscious of our own deaths. and of all the billions of creatures on ...