Sometimes, people email me with good questions. Here’s one. When I was a kid, my own visualization of evolution was Lamarckism. But I didn’t know it. In reading Dawkins and others, I know it doesn’t exist. But it seems this article is claiming it does to some extent. Can you comment? I’m curious as to…
Selection, evolution, plasticity. A short video to get students talking about great moments in evolution and to consider the relationship between heritable characteristics, non-heritable characteristics and selection.
Bonnie Bassler discovered that bacteria "talk" to each other, using a chemical language that lets them coordinate defense and mount attacks. The find has stunning implications for medicine, industry -- and our understanding of ourselves.
Japanese scientists have created small human livers from stem cells and transplanted them into mice. The transplanted livers were able to take on normal liver functions such as clearing toxins from the blood of the mice. This is believed to be the first successful generation of a functional organ from stem cells.
If you traced your family tree back 185 million generations, you wouldn't be looking at a human, a primate, or even a mammal. You'd be looking at a fish. So where along that line does the first human show up? The answer may surprise you.
What is unacceptable is to arrogantly dismiss the projections.
Scott Spargo's insight:
Brief summary of that identifies that there are projections which predict possible impacts of climate change on agriculture and a list of some of the strategies that will need to be considered to cope with these impacts. Relates to the precautionary principle.
Inspired by biological design and self-organizing systems, artist Heather Barnett co-creates with physarum polycephalum, a eukaryotic microorganism that lives in cool, moist areas. What can people learn from the semi-intelligent slime mold? Watch this talk to find out.
Scott Spargo's insight:
Relevant to Cells, a eukaryotic organism which beautifully illustrates response to stimuli in unicellular organisms, to the point where they exhibit behaviour usually thought to require intelligence. Highly recommended - potential for research projects and issues investigations.
A team of researchers from five Swedish universities has identified a new way of treating cancer. The concept is based on inhibiting a specific enzyme called MTH1, which cancer cells, unlike normal cells, require for survival. Without this enzyme, oxidized nucleotides are incorporated into DNA, resulting in lethal DNA double-strand breaks in cancer cells.
Alzheimer's disease is the most common cause of dementia, affecting over 40 million people worldwide. And though it was discovered over a century ago, scientists are still grappling for a cure. Ivan Seah Yu Jun describes how Alzheimer's affects the brain, shedding light on the different stages of this complicated, destructive disease.
The age of bioengineering is upon us, with scientists' understanding of how to engineer cells, tissues and organs improving at a rapid pace. Here, how this could affect the future of our physical bodies.
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