Small towns often have a lot of pride in being independent. But it's hard to get more independent than T'au.

Image from SolarCity/YouTube.

Ta'u is a beautiful island full of tropical forests and amazing beaches. It's part of American Samoa, an unincorporated territory of the United States. But for technically being part of the United States, it's really, really far away.

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We all know the feeling. Looking at your energy bill can be a lot like this:

How the heck did I use $30,000 worth of electricity? Was it all my Tesla coils? Photo from iStock.

Electricity is expensive. Renewable energy could help, but the technology has its hurdles to overcome, including cost, availability, and infrastructure.

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"How does solar energy work when there's no sun?" has been a question for pretty much about as long as solar energy has been a thing.

Of course people wouldn't want solar panels on their houses if installing them meant that, come sunset, the movie they were watching suddenly shut off, forcing them to read by candlelight like colonial settlers. Making solar power a viable option, even when the sun sets or disappears behind some clouds, was one of the first things scientists and engineers had to figure out.

Photo by Andreas Rentz/Getty Images.

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How Costa Rica went without fossil fuels for 76 days and what we can learn from it.

While we were all playing Pokémon Go, Costa Rica helped save the planet.

If Costa Rica were a kid going back to school, it would have a pretty awesome story to tell when asked what it did over its summer vacation.

Image via iStock.

"Oh nothing. I just ran entirely on renewable energy for 76 days. BOOYAH!" Costa Rica would say proudly.

OK, so this is the Costa Rican women's volleyball team celebrating their own victory at the Rio Olympics, but they'd probably be pretty pumped about renewable energy too. Photo by Yasuyoshi Chiba/Getty Images.

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