Thesiss

Modern birds are the most diverse group of living tetrapods, and vital to their success is the evolution of an extremely efficient respiratory system, which supplies them with the oxygen necessary to cope with the energetic demands of other aspects of their "high performance" bi…

Humans form lasting and unique relationships with the natural world and, by extension, the organisms and animals who have for millennia carved out niche environments. Scholars and general observers agree—at least in principle—that human beings have actively shaped (for better an…