High school students in Vietnam create a bike device that cleans the air for the cyclist.
from BBC News - World https://ift.tt/2uC4S4i
from BBC News - World https://ift.tt/2uC4S4i
As Biden prepares to extract troops, we ask three Americans with personal connections what they think. from BBC News - World https://ift.tt/2Qk74vu
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