Duping a guppy is easier than duping a ring dove — at least when it comes to a classic optical illusion.

Have you ever looked at two circles of exactly the same size and sworn one was larger? If so, your eyes have been tricked by ...

Josephine Guppy, 32, is a TV agent. She is single and lives in a two-bedroom cottage near Norwich. She says: ...

Have you ever looked at two circles of exactly the same size and sworn one was larger? If so, your eyes have been tricked by the Ebbinghaus illusion ...

Red fish are a favorite for both novice and expert fish enthusiasts alike, making them a popular choice for aquariums, large ...

Arctic seals are being pushed closer to extinction by climate change and more than half of bird species around the world are declining under pressure from deforestation and agricultural expansion, ...

Earth's vast oceanic biodiversity remains largely unexplored, with only a fraction of an estimated two million total living marine species formally named and described. A significant challenge is the ...

Researchers have described a new species of deep-sea lanternshark and crab, both with the help of specimens collected from a CSIRO-led 2022 voyage of CSIRO research vessel (RV) Investigator. Called ...

Scientists found a “large” creature with spines on its belly in a stream in China and discovered a new species, a study said. Photo from Getty / iStockphoto As darkness settled across southern China, ...

The rare species of prehistoric predator was found in southern England. A new species of ancient "sword dragon" marine reptile has been discovered in a set of fossils found in England, according to ...