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- Y Combinator-backed Holy Grail is using machine learning to build better batteries
- Facebook is starting to sell streaming video subscriptions — but not from HBO or Showtime
- UPS Has Been Delivering Cargo in Self-Driving Trucks for Months And No One Knew
- Inside the effort to print lungs and breathe life into them with stem cells
- The world’s first solar road has turned out to be a colossal failure that’s falling apart and doesn’t generate enough energy, according to a report
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- A hotter planet will make solar power less efficient
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