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Pastimes : R. Harmon's Earth 101 -- Ignore unavailable to you. Want to Upgrade?


To: .Trev who wrote (137)4/21/2000 2:38:00 PM
From: .Trev  Read Replies (2) | Respond to of 183
 
Interesting news over the week-end regarding the discovery of an unusual fossilized Dinosaur heart. I guess the soft tissues don't usually occur very frequently. Early conclusions are that the heart is similar to warm blooded mammals hearts rather than reptilian species.

Turns earlier concepts inside out a bit????



To: .Trev who wrote (137)4/22/2000 2:37:00 AM
From: Lilian Debray  Read Replies (1) | Respond to of 183
 
Have you ever looked at the patterns made by soil microbes eating their way through a colour film?

Bacteria remove the oxygen from the sulfates (SO4) just as they do in seawater when they have no other source of oxygen. They use it to oxidize their food, in this case natural gas (CH4). The sulfur is reduced to H2S (hydrogen sulfide).

Sulfur is of course an environmental, economic and political concern
cnn.com

Microorganisms eat metal too. The rusticles on the Titanic are melting her thick steel plates into rust. The microbes have consumed as much of 20 percent of the Titanic's bow. Thousands of bacteria-produced, reddish-brown stalactites of rust hang down as much as several feet like icicles. The process started right after the sinking of the ship.

"As the dust clouds settled and the final ejected debris came to rest, the rebirth of the Titanic began. Within hours nature initiated the reclamation of humanity's symbol of dominance over nature. The ubiquitous microflora of the oceans arrived to join the microbes that were already aboard - and still very much alive. Bacteria have far more resilience to pressure changes than other living organisms."
meena.cc.uregina.ca