Canada has officially legalized marijuana for all adults
Marijuana sales officially began in Canada on Wednesday, making it the first G7 country — and the second country in the world after Uruguay — to legalize the drug for all adults.
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The cost of renewable energy is declining and it's going to change everything
New statistics show that solar and wind power are now the cheapest sources of energy. With the declining cost of renewable energy, what steps must be taken
Industries in Depth
Mark Zuckerberg says the world is much more divided than he ever expected
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There are now more legal cannabis workers than dental hygienists in the US
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Nature and Biodiversity
Earth will likely warm way beyond the crucial tipping point that the Paris agreement was meant to avoid
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Nature and Biodiversity
The most stunning images NASA has ever taken of our planet
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Nature and Biodiversity
This start-up is tackling poaching by 3D-printing rhino horns
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