- #36
Nereid
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some random comments on the 'c'
IIRC, there's a few pages in the Talk Origins website which present references to modern instances of new species ... in the 'hard' sense of inter-breeding being no longer possible. The best examples are some plants.
A curious aspect of many of the anti-evolution documents I've read is the focus on large animals. As we all know, the first 3 billion years (+/-) of life on Earth was dominated by bacteria; animals weren't invented then. Indeed, many would argue that we are still in the Age of Bacteria; the vast majority of the biomass on the Earth is comprised of bacteria, the greatest diversity is to be found in bacteria (esp if the Archaea are included), etc (IIRC Gould said something like this in one of his books). Eukaryotes are just a minor aberation
But even if we restrict ourselves to Eukaryotes, why ignore all the others which aren't animals? True, in terms of a fossil record, there's not much to argue about for fungi, slime moulds, etc; but why not look at the contemporary rise and fall of species in these complex life forms?
Then there are plants. If the anti-evolutionists reject the idea that 'whole new features' can arise through evolution, are they considering only animals? If a clear case of 'new features' could be found among plants, would that shake their stance?
In another thread a creationist quoted the Cambrian explosion as a good reason why the theory of evolution was suss - how could all those phyla suddenly spring into existence? We should be thankful for this, and several other questions; they point to areas of active research, and (if the reader is willing to listen ) to discuss some fascinating research (and findings) ... like the Ediacara biota, the fact that plant divisions (they're not called phyla in that kingdom) can be traced (through fossils) way back to various algae over 1 billion years ago (way, way before the Cambrian), Snowball Earth, and much much more ...
Lastly abiogenesis (1). Ian Smith, in the Biology sub-forum, posted a link to a recent paper by Wrose (sp?), on research findings on the evolution of the cell. It's a great read Doesn't address the origin of life itself, but it starts to get close; the origin of cells.
Abiogenesis (2). There are no Earth rocks yet found older than ~3.8 billion years (crystals yes, but not rocks). However there are clear signs that there was life on Earth contemporaneous with the oldest rocks. The Earth is ~4.5 billion years old, but suffered several episodes of 'heavy bombardment' in the first few hundred million years of its existence (so say the craters of the Moon). Where did life come from? Maybe the panspermia idea should come in from the cold? Maybe life on Earth began on Mars, or Europa, or Titan? Maybe it began somewhere else in the Milky Way, 8 or 10 billion years ago?
Who wouldn't want to be among the teams which do the research to test these ideas! :surprise:
IIRC, there's a few pages in the Talk Origins website which present references to modern instances of new species ... in the 'hard' sense of inter-breeding being no longer possible. The best examples are some plants.
A curious aspect of many of the anti-evolution documents I've read is the focus on large animals. As we all know, the first 3 billion years (+/-) of life on Earth was dominated by bacteria; animals weren't invented then. Indeed, many would argue that we are still in the Age of Bacteria; the vast majority of the biomass on the Earth is comprised of bacteria, the greatest diversity is to be found in bacteria (esp if the Archaea are included), etc (IIRC Gould said something like this in one of his books). Eukaryotes are just a minor aberation
But even if we restrict ourselves to Eukaryotes, why ignore all the others which aren't animals? True, in terms of a fossil record, there's not much to argue about for fungi, slime moulds, etc; but why not look at the contemporary rise and fall of species in these complex life forms?
Then there are plants. If the anti-evolutionists reject the idea that 'whole new features' can arise through evolution, are they considering only animals? If a clear case of 'new features' could be found among plants, would that shake their stance?
In another thread a creationist quoted the Cambrian explosion as a good reason why the theory of evolution was suss - how could all those phyla suddenly spring into existence? We should be thankful for this, and several other questions; they point to areas of active research, and (if the reader is willing to listen ) to discuss some fascinating research (and findings) ... like the Ediacara biota, the fact that plant divisions (they're not called phyla in that kingdom) can be traced (through fossils) way back to various algae over 1 billion years ago (way, way before the Cambrian), Snowball Earth, and much much more ...
Lastly abiogenesis (1). Ian Smith, in the Biology sub-forum, posted a link to a recent paper by Wrose (sp?), on research findings on the evolution of the cell. It's a great read Doesn't address the origin of life itself, but it starts to get close; the origin of cells.
Abiogenesis (2). There are no Earth rocks yet found older than ~3.8 billion years (crystals yes, but not rocks). However there are clear signs that there was life on Earth contemporaneous with the oldest rocks. The Earth is ~4.5 billion years old, but suffered several episodes of 'heavy bombardment' in the first few hundred million years of its existence (so say the craters of the Moon). Where did life come from? Maybe the panspermia idea should come in from the cold? Maybe life on Earth began on Mars, or Europa, or Titan? Maybe it began somewhere else in the Milky Way, 8 or 10 billion years ago?
Who wouldn't want to be among the teams which do the research to test these ideas! :surprise: