Thought I'd start this thread from a question posed by Carl2 ...

QuoteSo a rather strange question when life first began did the animals or the plants start first, was there ever an excess of oxygen and lack of enough carbon dioxide?

There are several orders of life (the top classification) and it can be ambiguous what is alive (virus' etc.)
If gets more interesting in the domains of life, which are Archaea, Bacteria and Eukaryote.
All plants and animals are eukaryote life and are much further down the evolutionary tree than archaea and bacteria.

The earliest life was about 4 billion years ago, oxygen started building up about 3.5 billion years ago, the great oxygenation event happened about 2.45 billion years ago, eukaryote life evolved about 2.1 billion years ago, multi cellular life about 1.6 billion years ago, plants about 850 million years ago, animals trace back to the Cambrian explosion about 635 million years ago.

So, atmospheric oxygen is due to life but beats plants by about 1-2 billion years and animals came after plants but are the same domain of life. After that you get to kingdoms of life.

Thought this was interesting.

http: // www. youtube . com / watch ? v = ETDEuH3YL7I

By Accident... Just came across this Crash Test Dummy .

( A play on words, "Crash Test Dummy", "Accident" )


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« Edit Notes: Downgraded to a plain text post.

This is a VERY odd one! The past few days, my desktop machine has been "losing time", and I've been having to literally set the proper time each time I sat at the thing. I actually paid attention to it this time, and it's not just losing time, it's running BACKWARDS! :O Ad 9:00 this evening I set my cell on the desk, set the time to the proper value on the computer, then played some Minecraft. About 10 minutes later, I looked, and the cell said 9:10PM, while the computer indicated it was 8:51PM

I suspect it's the CMOS battery, but as I haven't shut the computer down, this also makes little sense. I'll swap it out anyway, tomorrow, and see if that helps. I'll keep you all posted. Have any of you blokes come across this before? I have, with computers that lose time when shut down, but not while they still run.

Made a little slideshow.

Exciting to watch. Flying by boats on the river in the background.



What makes it resemble a helicopter has no motor spinning it. **

It is powered by the smaller rear propeller, which is what makes it unique

** A mechanism starts it spinning up to speed, but then disengages.