Whales today are bigger than ever before. Now, we know why.
The tail of a humpback whale emerges from the surface of the Pacific Ocean in Colombia, on July 22, 2011 [AFP]

A big solution to a cold problem. A blue whale is the largest animal ever known to exist on Earth. NOAA It might not seem like it, but we live in a world full of giants. Blue whales are the largest animal ever to move across the planet, with the biggest measuring in at over 100…