Animals
Sharks are older than trees
animalsSharks have existed for over 450 million years, predating the first trees which appeared around 350 million years ago. Sharks survived all five of Earth's…
Octopuses have three hearts and blue blood
animalsAn octopus has three hearts: two branchial hearts pump blood through the gills, while a third systemic heart circulates it through the body. Their blood is…
A group of flamingos is called a flamboyance
animalsThe collective noun for flamingos is a "flamboyance" — perfectly fitting for birds known for their vivid pink plumage and theatrical one-legged stance.…
Crows can recognise and remember human faces
animalsStudies at the University of Washington showed that crows not only remember specific human faces but hold grudges against people who have wronged them — and…