Intriguing hypothesis on extinction of dinosaurs: Laying eggs doomed them.
I usually try to post a snippet that sums up the article, but in this case I think the whole thing should be read, so I'll post a teaser instead.
Weighing in at four tons, the mother animal was 2,500 times heavier than its newly hatched dinosaur baby. By way of comparison, a mother elephant, which is just as heavy, only weighs 22 times as much as its new-born calf. In other words, neonates are already big in large mammal species. The staggering difference in size between newly hatched dinosaurs and their parents was down to the fact that there are limits to the size eggs can become
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