Millions of years ago, animals adapted to become warm-blooded amid huge climactic changes. Now scientists hope these clues from the past could help us understand what lies aheadIn Chicago’s Field Museum, behind a series of access-controlled doors, are about 1,500 dinosaur fossil specimens. The palaeobiologist Jasmina Wiemann walks straight past the bleached leg bones – some as big as her – neither does she glance at the fully intact spinal cord, stained red by iron oxides filling the spaces... Read this story
