Sperm whales alter vowel-like clicks near boats, study finds
Researchers off Dominica say sperm whales changed the structure of their clicks when ships were nearby, offering a new way to detect marine traffic
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Pakistani passport's ranking slips to 101st, still 4th-worst in the world
Pakistan's passport has slipped another position in the closely watched Henley Passport Index, dropping to 101st out of 199 travel documents ranked in the July 2026 update, and remaining the fourth weakest passport in