They say curiosity killed the cat, but in this case curiosity can only reward. With the new Amazing Answers to Curious Questions, satisfy your natural curiosity with the most incredible of answers. For instance, did you know that cats are far more likely to have heterochromia - two different eye colours - than humans? Very curious indeed… Featuring: Science - Chemistry, Biology and Physics facts. Space - Find out facts and figures that are truly out of this world. Environment - Questions and answers from across the natural world. History - Learn about how battles of the past were fought