Hydrogen-powered drones have several advantages to lithium ion-powered ones, says Dr Enass Abo-Hamed.
from BBC News - Home https://ift.tt/2Qyv76b
from BBC News - Home https://ift.tt/2Qyv76b
You saw the headlines of a $1.8m meteorite? Here's the real story and it's just as fascinating. from BBC News - Home https://ift.tt/394sXG5
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