The ultimate invasive species ?

Why Homo Sapiens !  Those folks will walk anywhere, adapt to any conditions, elbow out the current inhabitants - there's no stopping them !

source: https://www.youtube.com/watch?v=eOwzSoDm5ws

I have to admit that while I remembered that NOVA was on, and that the Brewers had played in the afternoon, I still started nodding off as usual towards the end of the NOVA.

  Good thing that the show was available on Youtube as well because I still haven't fixed the PVR power supply so I couldn't record it.

They started walking out of Africa, proceeded all around Eurasia, continued down through North and Central America and finally got down to the tip of South America (although this program stopped at the jumping off to Australia).  These folks took advantage of the lower sea levels and resulting land bridges for their treks (while also mastering travel across water).  It was a good stretch of the legs, no wonder that distance running is the bedrock of the Olympic games - all nations walk/run.  And you have to figure that if/when people live on the Moon or Mars, they will be walking.

We are from walkers, all of us, that's who we are.  

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm