Dinosaurs are far from 'extinct', but dominate as birds still most regions of the globe. Part of this huge success is due to the evolution of air sacs, which are crucial for the high efficiency of ...

Journal of Avian Medicine and Surgery, Vol. 16, No. 1 (Mar., 2002), pp. 2-9 (8 pages) The air sac functional anatomy of sulphur-crested cockatoos (Cacatua galerita) during isoflurane anesthesia was ...

Somewhere in Earth’s past, some branches on the tree of life adopted a body plan that made breathing and cooling down considerably more efficient than how mammalian bodies like ours do it. This ...

Scientists have overcome a major obstacle in the development of 3D printed tissue that can be used to replaced damaged or diseased organs. Using breakthrough techniques, the scientist’s 3D printed a ...

Long-necked sauropods ruled the land during the Jurassic and Cretaceous ages. These plant-eating giants appeared on every continent and grew to sizes no other land animal has matched. A key reason for ...

The missing link has just been found between the earliest dinosaurs, whose size ranged from a few centimeters to at most 3 meters in length, and more recent giants that could be more than twice the ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. Human ...

Sanja Jelic, MD, is a board-certified pulmonologist and sleep specialist who teaches in the Division of Pulmonary, Allergy, and Critical Care Medicine at the Columbia University College of Physicians ...

The State of Global Air 2025 examines air quality and health outcomes using the latest PM2.5 and ozone exposure data and disease burden models.