BBC NEWS | Science/Nature | Sloth's lazy image 'a myth' sleep less than was once thought laziness of species called into question. هنا study sleep less than was once thought sleep less than was once thought பிபிசி செய்தி. http://news.bbc.co.uk/2/hi/science/nature/7396356.stm BBC 10 hours from the benign Briggs reported Planck Institute for Ornithology sleep less than was once thought BBC News more news.bbc.co.uk Briggs Briggs BBC News BBC NEWS | Science/Nature | Sloth's lazy image 'a myth' Sloth's lazy image "a myth." "Article "Sloth's Lazy Image 'A Myth'"" "Article "Sloth's Lazy Image 'A Myth'"" BBC News Article "Sloth's Lazy Image 'A Myth'" BBC News Article "Sloth's Lazy Image 'A Myth'"