Solar is the cheapest power, and a literal light-bulb moment showed us we can cut costs and emissions even further - The Conversation

Until now, a more expensive type of silicon was used to produce the highest-efficiency solar panels. Now there’s a way to use cheaper raw materials, cutting the cost of solar power for everyone.

Recent extreme weather events have underscored the need to cut the CO emissions that are driving up global temperatures. This requires a rapid transition of the energy economy to renewable energy sou… [+6126 chars]

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