science

Via: Vox
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You've probably learned about vestigial organs in Biology class by now. There are a lot of things that aren't important to humans any more but we've still held onto them in some way. If you've ever seen someone wiggle their ears, it's obvious. 

This video shows some of those unnecessary parts and why we used to have them. It also goes into detail about the way that some humans have actually lost those extra pieces. 



That's evolution at work. 

Via: exurb1a
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I would have paid a lot more attention in school if they taught quantum theory like this.

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When the soft drink 7-Up first came out it was 'lithiated'. The soda used to include lithium citrate, which is now better known as a mood-stabilizing drug. Similar to how Coca-Cola famously used to contain cocaine, the makers of 7-Up were capitalizing on the popularity of "medicated" soft drinks at the time.

That's what inspired this experiment. The original 7-Up did not contain a chunk of metal lithium but the end result is entertaining. The solution even ends up working as an indicator, changing from colorful to clear and back again depending on the acidity of the solution.

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