Two-dimensional materials are substances with a thickness of a few nanometres or less. Electrons in these materials are free to move in the two-dimensional plane, but their restricted motion in the ...
Babies are born with smaller eyes, about 16.5 millimeters long, and eyesight develops over the first 2 years as focus and coordination improve. Eyeballs grow rapidly after birth and again during ...
As the MDGs era comes to a conclusion with the end of the year, 2016 ushers in the official launch of the bold and transformative 2030 Agenda for Sustainable Development adopted by world leaders last ...
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