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Tesla teases Gigafactory 1, aiming for largest rooftop solar array in the world

Tesla posted a picture of the Gigafactory on Twitter.

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<p>KIEV, UKRAINE - 2018/08/06: The Facebook logo seen displayed on a smart phone. According to the New York Stock Exchange (NYSE), the company is on the fifth place at the market value in the world - $ 509.2 billion. (Photo by Igor Golovniov/SOPA Images/LightRocket via Getty Images)</p>

Facebook vows to use 100% renewable energy by the end of 2020

The social media giant is looking to go (even more) green.

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<p>The General Store on Tyalgum's main street.&nbsp;</p>

The Australian town ditching the power companies and going off-grid

Australia may be wedded to coal, but one town in the country's east wants to carve out its own future, no fossil fuels in sight.

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<p>Wind turbines, such as this one in France, are the top source of renewable energy among corporate buyers but solar energy is on the rise.</p>

Renewable energy wins over big businesses in US

Despite President Trump's call for a coal power renaissance, companies like GM, Target and Starbucks are following Google and Apple in deals for solar and wind energy.

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<p>A few dozen drone hubs could handle deliveries of small packages for much of the San Francisco Bay Area, potentially reducing greenhouse gas emissions, researchers have found.</p>

Amazon's delivery drones could cut greenhouse gas emissions

They're still more a dream than reality, but aerial delivery drones could release less of the gases that lead to climate change, like carbon dioxide, researchers find.

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Ikea is selling solar batteries in the UK

The batteries are for the storage of energy collected by rooftop solar panels.

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<p>Al Gore, promoting his new movie about dealing with climate change, jokingly prays Donald Trump will be voted out of office in 2020.</p>

Trump? Whatever. Al Gore says we'll cope with climate change

Plugging his new movie, "An Inconvenient Sequel," the former vice president says technology and politics can overcome the president's stance.

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<p>Computer boards awaiting to be dismantled as recyclable waste at the Electronic Recyclers International plant in Holliston, Massachusetts. </p>

Apple vows to end mining and use only recycled materials

The company cites concern for the planet's future as the chief motivation for the shift.

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BMW to add 100-ish EV charging stations to national parks

I'm sure there's a good joke about hippies to throw in here somewhere.

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<p>Amazon is installing solar panels on 15 warehouses in 2017.</p>

​Amazon turns warehouse roofs into solar power stations

Fifteen warehouses with solar panels will crank out 41 megawatts of power -- and mean you won't have to pay as much for Amazon services.

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How to buy the best electric car

There's plenty to consider before buying your first electric car. Let's look at your choices.

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Tomatoes grown in Australian desert from sunshine and seawater

Using salt water and sunlight, Sundrop Farms is able to produce 15 million kilograms (33 million pounds) of tomatoes a year from the Australian desert.

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Does BMW or Volvo do it best?

Pint-size luxury and funky style

Shopping for a new car this weekend? See how the BMW X2 stacks up against the Volvo XC40 in our side-by-side comparison.