Early spring means more bat girls

There must be something in the warm breeze. A study on bats by a University of Calgary researcher suggests that bats produce twice as many female babies as male ones in years when spring comes early.

Unraveling the mysteries of Nipponosaurus

Nipponosaurus sachalinensis—a controversial hadrosaurid dinosaur whose fossilized skeleton was unearthed in southern Sakhalin in 1934—is found to be a valid taxon and a juvenile that had not reached sexual maturity.

Are elder siblings helpers or competitors?

Having elder siblings decreases mortality risk in childhood, but same-sex elder siblings are associated with lower marriage rates and fewer children for their younger siblings in adulthood, according to the results of a long-term ...

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