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1.
How can we make air conditioners more efficient? [video]
(
youtube.com
)
371 points
by
zeristor
on Aug 22, 2021
|
216 comments
2.
Procrastination is driven by our desire to avoid difficult emotions, says expert
(
cbc.ca
)
613 points
by
pseudolus
on June 16, 2020
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312 comments
3.
Ask HN: How Can I Learn Music Theory?
673 points
by
deanstag
on Dec 18, 2019
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239 comments
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