Planet Earth without humans

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Planet Earth without humans

pdq

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#39

08-26-2014, 08:32 PM

Scientific American wrote:
Carl Sagan speculated about intelligent dinosaurs in The Dragons of Eden (1977) and posed the question: what if non-avialan dinosaurs hadn’t become extinct? If Cretaceous forms were already so ‘smart’, what would have happened given another 60-odd million years of evolution?

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Planet Earth without humans - by space-time - 08-25-2014, 09:16 PM

Re: Planet Earth without humans - by Speedy - 08-25-2014, 09:19 PM

Re: Planet Earth without humans - by Steve G. - 08-25-2014, 09:23 PM

Re: Planet Earth without humans - by hal - 08-25-2014, 09:23 PM

Re: Planet Earth without humans - by MGS_forgot_password - 08-25-2014, 09:32 PM

Re: Planet Earth without humans - by Randalls - 08-25-2014, 09:33 PM

Re: Planet Earth without humans - by clay - 08-25-2014, 09:36 PM

Re: Planet Earth without humans - by N-OS X-tasy! - 08-25-2014, 09:43 PM

Re: Planet Earth without humans - by billb - 08-25-2014, 09:50 PM

Re: Planet Earth without humans - by blooz - 08-25-2014, 09:51 PM

Re: Planet Earth without humans - by space-time - 08-25-2014, 09:53 PM

Re: Planet Earth without humans - by Steve G. - 08-25-2014, 09:59 PM

Re: Planet Earth without humans - by Article Accelerator - 08-25-2014, 10:04 PM

Re: Planet Earth without humans - by davester - 08-25-2014, 10:08 PM

Re: Planet Earth without humans - by Acer - 08-25-2014, 10:12 PM

Re: Planet Earth without humans - by Lew Zealand - 08-25-2014, 10:19 PM

Re: Planet Earth without humans - by Rick-o - 08-25-2014, 10:27 PM

Re: Planet Earth without humans - by davester - 08-25-2014, 10:36 PM

Re: Planet Earth without humans - by N-OS X-tasy! - 08-25-2014, 11:07 PM

Re: Planet Earth without humans - by Randalls - 08-25-2014, 11:32 PM

Re: Planet Earth without humans - by Lance Birk - 08-25-2014, 11:38 PM

Re: Planet Earth without humans - by Article Accelerator - 08-26-2014, 12:37 AM

Re: Planet Earth without humans - by Chakravartin - 08-26-2014, 12:58 AM

Re: Planet Earth without humans - by mrlynn - 08-26-2014, 01:16 AM

Re: Planet Earth without humans - by Ombligo - 08-26-2014, 01:24 AM

Re: Planet Earth without humans - by ka jowct - 08-26-2014, 02:13 AM

Re: Planet Earth without humans - by davester - 08-26-2014, 02:18 AM

Re: Planet Earth without humans - by davester - 08-26-2014, 02:22 AM

Re: Planet Earth without humans - by mrlynn - 08-26-2014, 02:31 AM

Re: Planet Earth without humans - by eustacetilley - 08-26-2014, 02:31 AM

Re: Planet Earth without humans - by mrlynn - 08-26-2014, 02:43 AM

Re: Planet Earth without humans - by Speedy - 08-26-2014, 02:47 AM

Re: Planet Earth without humans - by davester - 08-26-2014, 03:58 AM

Re: Planet Earth without humans - by Article Accelerator - 08-26-2014, 04:44 AM

Re: Planet Earth without humans - by Carnos Jax - 08-26-2014, 05:54 AM

Re: Planet Earth without humans - by Carnos Jax - 08-26-2014, 05:57 AM

Re: Planet Earth without humans - by PeterB - 08-26-2014, 06:13 AM

Re: Planet Earth without humans - by mrlynn - 08-26-2014, 11:23 AM

Re: Planet Earth without humans - by pdq - 08-26-2014, 08:32 PM

Re: Planet Earth without humans - by decay - 08-27-2014, 12:44 AM

Re: Planet Earth without humans - by mrlynn - 08-27-2014, 03:39 AM

Re: Planet Earth without humans - by freeradical - 08-27-2014, 04:08 AM

Re: Planet Earth without humans - by PeterB - 08-27-2014, 05:12 AM

Re: Planet Earth without humans - by decay - 08-27-2014, 02:54 PM

Re: Planet Earth without humans - by Article Accelerator - 08-27-2014, 05:05 PM

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