Your Wasted Salad Greens Are Contributing to Climate Change

Food waste – uneaten scraps or leftovers sent to landfills – is responsible for 10% of global emissions. Mill, a new product from the co-founder of Nest, thinks technology can play a role in eliminating it.
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Can NYC Finally Cool Its Subway?
Why is the NYC subway platform so hot? One rider built his own sensor network to find out. We explore the geothermal fix the MTA is piloting right now.
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