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Robotic Aircraft Powered by Hydrogen Fuel
The Ion Tiger UAV tests a hydrogen-powered fuel cell design, which can travel farther and carry heavier payloads.
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Word of the Day
lament
Definition:
A song or hymn of mourning composed or performed as a memorial to a dead person.
Synonyms:
coronach
,
dirge
,
requiem
,
threnody
Word of the Day
provided by
The Free Dictionary
Today in History
This Day in History
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Quiz Me
Sir Isaac Newton was knighted in April 1705 by which queen?
Queen Mary
Queen Elizabeth I
Queen Anne
Queen Victoria
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Sir Isaac Newton was knighted in April 1705 by which queen?
Queen Mary (14.29%)
Queen Elizabeth I (21.43%)
Queen Anne (21.43%)
Queen Victoria (42.86%)
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