PARIS: When aliens or our distant progeny sift through layers of sediment 500,000 years from now to decode the Earth's past, they will find unusual evidence of the abrupt change that upended life half-a-million years earlier - chicken bones.
That is the conclusion of scientists whose findings are offered as proof that rapid expansion of human appetites and activity so radically altered natural systems as to tip Earth into a new geological epoch called the Anthropocene, or the "era of humans".
