An anonymous reader writes: What's the opposite of a silver lining? A hypothesis floating around in the scientific community, and published in PLoS One, argues that our big brain is the reason that humans are so prone to cancer.
The huge brains in humans are responsible for humans' long lives, which is why we are able to spend so much time lavishing attention on our children and learning new things.
But the downside is that the lack of apoptosis may put humans at risk for tumors, since the destruction of malfunctioning cells would lower the risk of cancer. "Reduced apoptotic function is well known to be associated with cancer onset,"