nklr digest number 143

[bmgecko]

Maybe the formation of obsidian (thanks to volcanic activity) ain't much to you, but I'm glad my ancestors knew that this precious rock was the best flintknapping material there was. Without the damaging effects of great igneous rocks to flintknap, we'd be in the stone age or before! Chris Astier

----- Original Message ----- From: To: DSN_klr650@egroups.com> Sent: Thursday, May 18, 2000 7:10 PM Subject: Re: [DSN_klr650] Digest Number 143 > You have hit the bullseye with this one. Studies performed by world renowned > scientists have proven that volcanic activity over the centuries has caused > more damage to the ozone layer than all of mankind's activity since > creation/evolution (depending on your personal beliefs). Unfortunately, you > are not going to hear much about this unless you dig for it.