Some icebergs are a glorious emerald green. Why?

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While traversing the seas off of eastern Antarctica in 1988, glaciologist Stephen Warren came upon green icebergs floating in the ocean. “We never expected to see green icebergs,” said Warren, noting that a deep blue hue — not emerald green — is commonly observed in these chunks of ice.

Over three decades later, Warren and a team of researchers have put forward an explanation for these rarely seen icebergs’ green hue. Their hypothesis, published Monday in the Journal of Geophysical Research: Oceans, argues that tiny iron-rich rocky particles, similar to flour or dust, are the culprits. Specifically, this finely ground-up rock, aptly named “glacial flour,” gets trapped in the ice on the bottom of ice shelves — the ends of glaciers that float over the ocean — ultimately lending to the ice’s deep green appearance. When the icebergs eventually snap off, the fresh bergs carry the verdant hue. Read more…

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Earth is greener than it was 20 years ago, but not why you think

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Two NASA satellites have watched Earth grow greener over the last 20 years — in large part because China is hellbent on planting millions of trees. 

Earth’s greening — meaning the increase in areas covered by green leaves — has made the greatest gains in China and India since the mid-1990s. “The effect comes mostly from ambitious tree-planting programs in China and intensive agriculture in both countries,” NASA wrote on Tuesday as it released maps of the planet-wide changes. 

China kickstarted its tree-planting mobilizations in the 1990s to combat erosion, climate change, and air pollution. This dedicated planting — sometimes done by soldiers — equated to over 40 percent of China’s greening, so far. Read more…

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Grobox is the soilless, aesthetically pleasing indoor greenhouse that you need

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Heads up: All products featured here are selected by Mashable’s commerce team and meet our rigorous standards for awesomeness. If you buy something, Mashable may earn an affiliate commission.

Hey, plant parents: It’s winter, it’s gross outside, and both you and your indoor plants are having a hard time staying cozy.

If your green thumb (or lack thereof) is itching to get into indoor gardening (or stop spending your life savings on grocery store kale), let us introduce you to GroBox One: A new take on the indoor greenhouse, without all the BS — plus, it looks super cool.

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