(RNS) — Scientists have created a human embryo without the use of sperm or an egg — a true test-tube baby. Such embryos cannot (yet) develop into full-grown human beings. Even if transplanted into a ...
Crows who bend sticks into tools, whale clans who speak distinct dialects, and bumblebees who teach each other how to solve puzzles. Human beings aren’t the only animals with culture. Still, the ...
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