Any pediatrician has seen it: a baby who spends so many hours lying on their back that one side of the head ends up flat. The ...
Cualquier pediatra ha visto alguna vez a un bebé que pasa tantas horas tumbado sobre la espalda que acaba con la parte de ...
About 70 million years ago, in what is now Alberta, Canada, a young Albertosaurus—a relative of T. rex—ended up as food for ...
Hace unos 70 millones de años, en lo que hoy es Alberta (Canadá), un joven Albertosaurus —un pariente del T. rex— acabó ...
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