Twitter can be a remarkable tool.

The ability to instantly send a message to your favorite athlete, a movie star, or even the president of the United States still seems like something out of a sci-fi novel. The platform's ubiquity also means you may even get responses from the famous people you reach out to. That's a good thing, right? As we're learning with each passing day, maybe it's not.

When a science writer tweeted criticism of billionaire Elon Musk, she got a personal response from him — and many of his followers.

Writing for The Daily Beast, Erin Biba recounted what happened when she addressed Musk's recent anti-media tirades and his criticism of nanotechnologist Upulie Divisekera being "100% synonymous with BS" on account of her job title.

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Family

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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Heroes

Rocket science is alive and as awesome as ever.

If you've been dying for some rad space news since NASA completed its last space shuttle mission in 2011, it's finally here.

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Heroes