It's no shocker that Harry and Hermione would know that 4 — 1 = 3. But what if I told you that this Harry and Hermione aren't characters in Harry Potter stories — they're stingrays. And they can still ...
BONN, Germany (StudyFinds.org) – Apparently, one plus one equals tu-na. A new study reveals that fish are capable of doing simple math problems, just like people! Researchers in Germany have found ...
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