There is a colorless and odorless liquid you can breathe in which is called perfluorohexane. Animals can be submerged in it without drowning. – WTF Fun Facts
Source: https://en.wikipedia.org/wiki/Perfluorohexane
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WTF Fun Fact – The Force
In molecular physics, there is a principle called Van der Waals Forces, which are the tiny attractive forces between atoms and molecules. This is what allows geckos to stick to and climb almost anything. – WTF Fun Facts
Source: https://www.thoughtco.com/definition-of-van-der-waals-forces-604681