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Peacock feathers can emit laser beams

The feathers can emit two frequencies of laser light from multiple regions across their colored eyespots. Peacock feathers are greatly admired for their bright iridescent colors, but it turns out they can also emit laser light when dyed multiple times, according to a paper published in the journal Scientific…

Making Roman concrete produces as much CO2 as modern concrete

Roman concrete produces as much, if not more, CO2 as modern concrete, fewer air pollutants. Builders in ancient Rome used a special kind of ancient concrete to construct their aqueducts, bridges, and buildings. But is Roman concrete more sustainable than the Portland cement used in today’s concrete? The answer…

Tesla picks LGES, not CATL, for $4.3 billion storage battery deal

​The lithium iron phosphate cells will be made in Michigan.  Tesla has a new battery cell supplier. Although the automaker is vertically integrated to a degree not seen in the automotive industry for decades, when it comes to battery cells it’s mostly dependent upon suppliers. Panasonic cells can be…