«We found that polar bears appear unable to meaningfully prolong their reliance on stored energy, confirming their vulnerability to lost hunting opportunities on the sea ice — even as they surprised us by also exhibiting an unusual ability to minimize heat loss while swimming in Arctic waters,» says John Whiteman, the UW doctoral student who led the project. (sciencedaily.com)
Very short (fs) single pulses improve the photothermal efficacy by minimizing heat loss by NPs, though at the same time they limit the efficacy of PT conversion, since maximal energy is limited by the optical breakdown threshold. (thno.org)
This anatomical trick helps aquatic birds minimize heat loss when their feet are in cold water; some whales have similar heat exchangers in their tongues. (sciencemag.org)