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maryland. >> thanks for joining us. this situation room starts now happening. >> now, new details just coming in on how president biden and former president trump are gearing up for their cnn hey now less than two weeks away, what are sources inside both campaigns are telling us about their preparations that we're tracking the fall out from a major us supreme cream court ruling, striking down a ban on bump stocks, a controversial gun accessory, the justices still preparing to hand down opinions on other major issues, including donald trump's immunity claims also tonight, pope francis...

And their tiny bodies lose heat and burn energy quickly. for marine mammals like seals, bulky bodies packed with oxygen storing muscle and insulated by layers of fat help them spend many minutes underwater. the researchers used dna to work out exactly how such a diminutive mammal evolved this unusual semi—aquatic lifestyle. the scientists created a genetic family tree of 71 related insect eating mammal species, and they discovered that at five distinct points in their history, shrews and moles had evolved the ability to store much more oxygen in their muscles in a protein called myoglobin. w...

If you've never seen a water shrew in action, that's about to change. they're tiny mammals which have long baffled scientists with their ability to hunt underwater. now researchers from the university of liverpool have worked out how the water shrew evolved to be so different to most other marine predators. our science and environment correspondent victoria gill has this report. a water shrew�*s ability to dive and hunt in freezing water appears to defy evolutionary logic. they only weigh about 15 grams, less than one aa battery, and their tiny bodies lose heat and burn energy quickly. for m...

To defy evolutionary logic. they only weigh about 15 grams, less than one aa battery, and their tiny bodies lose heat and burn energy quickly. for marine mammals like seals, bulky bodies packed with oxygen storing muscle and insulated by layers of fat help them spend many minutes underwater. the researchers used dna to work out exactly how such a diminutive mammal evolved this unusual semi—aquatic lifestyle. the scientists created a genetic family tree of 71 related insect eating mammal species, and they discovered that at five distinct points in their history, shrews and moles had evolved t...

They only weigh about 15 grams, less than one aa battery, and their tiny bodies lose heat and burn energy quickly. for marine mammals like seals, bulky bodies packed with oxygen storing muscle and insulated by layers of fat help them spend many minutes underwater. the researchers used dna to work out exactly how such a diminutive mammal evolved this unusual semi—aquatic lifestyle. the scientists created a genetic family tree of 71 related insect eating mammal species, and they discovered that at five distinct points in their history, shrews and moles had evolved the ability to store much mor...