Science is awesome!!!!!!
[1] Lots of holes could be picked in this; it's just a bit of fluffy popular 'science' with some achorage in reality. Chickens living to 20 years? Things happen to most chickens long before that age, & I would say most are 'old' at ten, if they last that long. However, I knew a Sumatra x Old English Game hen that was killed on her nest by a dog at fifteen, so I suppose 20 is possible. Also, other pheasant species [and a chicken is a pheasant] have exceeded 20.
[2] I wish we could get rid of the overuse of the word 'awesome' which seems to have strayed so far from its former meaning.