Megan Willett explains:

Reddit user AaronM97 was feeling really down on Sunday night, and asked the Reddit community to tell him anything that would make him "think higher of the world."

The thread is amazing:

http://reddit.com/r/AskReddit/comments/1nexqv/whats_a_fact_you_know_that_will_cheer_me_up/

My favorite facts verified by BI are included below.

There's an island in Australia where you can hang out with an animal known as the Quokka that has no fear of humans and a perpetual smile on its face. (via Reddit user -GregTheGreat-) 

Smile — it's scientifically proven that the act of smiling inadvertently improves our mood. (via Reddit user AgathaCrispy)

Blind people smile like everyone else, even though they've never seen anyone else smile. It's just a natural human expression. (via Reddit user -eDgAR-)

1 billion people have been taken out of extreme poverty between 1990 and 2010. We should aim to do the same thing by 2030. (via Reddit user FamousMortimer)

36 years ago, at the height of the Cold War, humans launched the two voyager deep space probes. On those two probes is a golden record, which includes a visual representation of a man and woman, the location of Earth relative to several pulsars, and binary instructions for the playing of a record with human music.

At a moment when all life on Earth was almost annihilated and we were fundamentally divided, human kind sent a message in a bottle into space as a universal hello. (via Reddit user WilliamtheV)

The man who does Winnie-the-Pooh's voice spends some of his spare time calling children in the cancer wards of hospitals and telling them in Pooh's voice how much he loves them and how brave they are. (via Reddit user SirNerd)

At this exact moment, there are probably tens of thousands of babies laughing around the world. (via Reddit user yardnome070)