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Human sperm carry a hidden source of genetic diversity
1+ week, 6+ day ago (703+ words) Genetic recombination in sperm can begin earlier than expected, revealing a previously overlooked source of human genetic diversity. Every child inherits a genome that’s uniquely their own, shuffled together from both parents through a process called recombination. Scientists have generally…...
Motorboat noise leaves a lasting mark on young reef fish
1+ week, 6+ day ago (999+ words) A new experiment reveals how motorboat noise during early development can have lasting effects on young reef fish. Coral reefs are full of sound. Young fish grow up hearing that natural chorus mixed with noise from passing boats. Small motorboats…...
Boat noise makes humpback whale songs up to 45 percent less likely to be detected
1+ week, 6+ day ago (896+ words) Boat noise makes humpback whale songs up to 45% less likely to be detected off Panama. Boat engines are changing what underwater microphones can hear along Panama’s Pacific coast. Early results from a yearlong monitoring project show that the presence of…...
Dolphins hunt with sound, but their prey may be listening back
2+ week, 6+ day ago (845+ words) Underwater recordings reveal how dolphins use different sounds to socialize and hunt, while their fish prey may be listening for danger too. Dolphins live inside a world of sound. Whistles carry the social chatter, while bursts of rapid clicks work…...