Comment: if we're at this point already... (Score 1) 303
any competent alternatives? I like coming here to learn things...
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Comment: population density (Score 1) 264
"Medium-sized sauropods weighed about 20 tons and lived in herds of up to a few tens of individuals per square kilometer so global methane emissions from the animals would have amounted to around 472 million tons per year, the scientists calculated."
How could they possibly know the population density?
not to be an ass, just asking honestly
