Solar cell efficiency has dramatically increased from 3.8% in 2009 to 35.5% today. This new crystalline silicon-perovskite tandem cell was independently certified by ESTI. The technology combines two absorbers to capture more of the solar spectrum. Researchers are now focusing on long-term stability and manufacturing scalability.
In 1978, Turkey Point workers found 1 crocodile nest when Florida had fewer than 300 left. 48 years later, about 400 live in its canals, turning a nuclear plant into an unlikely crocodile habitat
In 2009, German startup SkyWind first showed its rooftop micro turbine design. 17 years later, the machine has secured certification, with Utah testing verifying roughly 615 kWh of electricity per year
Free-range vs. farm-raised chicken: Why one has firmer meat and stronger flavor while the other is cheaper and more tender
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