The dark brown melanin pigment, eumelanin, colors hair and eyes, and protects our skin from sun damage. It has also long been known to conduct electricity, but too little for any useful application—until now.
Materials Science
Mar 26, 2019
0
231
A 2.3 percent jump in global energy demand last year outstripped the expansion of renewables and helped drive record-high greenhouse gas emissions, the International Energy Agency (IEA) said Tuesday.
Environment
Mar 26, 2019
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50
The US space agency NASA scrapped Monday a planned historic spacewalk by two women astronauts, citing a lack of available spacesuits that would fit them at the International Space Station.
Space Exploration
Mar 26, 2019
1
21
