CANCER - Why Blue Whales Don't Get Cancer - Peto's Paradox

Cancer is a creepy and mysterious thing. 
While we tried to understand it, to get better at killing it, we discovered a biological paradox that remains unsolved to this day: large animals seem to be immune to cancer. 
Which doesn’t make any sense – the bigger a being, the more cancer it should have. To understand why, we first need to take a look at the nature of cancer itself.