Technology can do more than give rich first-worlders new video games or $100,000 electric cars. Here are some technologies that can change the lives of billions of people.
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We know you're interested in politics. After all, you're reading this. So here's some podcasts that might hit all the right buttons for you.
Every election campaign results in the production of thousands of plastic corflute signs. But they don't have to be an environmental hazard - they can be reused and recycled.