The work of 'The Iron Lady' could help save millions of lives in Nigeria.

In Nigeria, there is a woman known as "The Iron Lady." And how she earned that nickname is a lesson in perseverance.

Her real name is Zainabu Abubakar and she lives in a society where women don’t work, let alone hold a leadership position. But you know what? She did both.

All images via Zainabu Abubakar, used with permission.

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Women were dying from childbirth at hospitals. This 19th-century doctor figured out why.

Today, we know that washing our hands is one of the most important steps we can take to avoid getting sick and spreading germs.

But how we came to know that is pretty fascinating.

Image via iStock.

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Did that really just happen? Yep. This guy pulled down his pants, on stage, during his TED talk.

Toilet humor can be really funny, but it's not always sh**s and giggles. Especially if you're one of the 2.5 billion people without access to toilets or proper sanitation. Thankfully, this guy started a company that plans to do something about it.

Watch his recent TEDx talk, then check out his original (and hilariously pun-tastic) crowdfunding campaign from about a year ago.

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