Happiness Guaranteed: 35 Fun and Interesting Facts to Cheer You Up

A blue whale's heart can weigh in excess of 1,300 lbs and be the size of a small car. Their heart beats at a rate of 8–10 beats per minute and can be heard from over 2 miles away.

27. In 2009, Stephen Hawking held a party open to all, but only publicized the party after it was over so that only time-travelers would know to attend. As expected, nobody showed up to the party.

28. Cristiano Ronaldo bought his agent (Jorge Mendes) a whole Greek Island as a wedding present.

29. The first police car was bought in Akron, Ohio in 1899. Its first assignment was to pick up a drunk man.

30. J.K. Rowling was famously rejected by 12 publishers before Harry Potter and The Philosopher's Stone was accepted by Bloomsbury - and even then only at the insistence of the chairman's eight-year-old daughter.

Norway's coastline is so complex that if you stretched it all into a straight line it would circle the Earth two and a half times.

32. In 1908, the Russian Olympic team arrived at the Olympics in London 12 days late because it was still using the Julian calendar instead of the Gregorian calendar.

33. Seagulls stomping on grass is called the rain dance. This mimics rain by vibration and brings earthworms and other bugs to surface.

34. Trained African giant pouched rats have found thousands of unexploded landmines and bombs. Researchers have also trained these rats to detect tuberculosis and most recently they are training them to sniff out poached wildlife trophies being exported out of African ports.

35. Gibbons is one of the only non-human primates which practice monogamy. Both parents play a vital role in raising their young.