The Narwhal
📰 The Narwhal (non-profit)
Jul 22, 2026
· 1 min read
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How to make a $60 air purifier, as Canada’s wildfires rage on
Original article ↗B.I.A.S. ANALYSIS
CENTER
LEFTCENTERRIGHT
Signal breakdown
Heuristic (v1/v3)
0.00 · CENTER
ML v2 (DistilBERT)
0.000 · CENTER
Ensemble
0.000 · CENTER
🏦 Source Intelligence
Rolling outlet bias
CENTER
avg -0.087
96 articles tracked
7-day bias trend
LcenterR
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Article Excerpt
Three-quarters of Canadians are worried about poor air quality due to wildfire smoke. In B.C., people are learning to build effective, low-cost air purifiers
Read full article at The Narwhal ↗
How we scored this article
WTF uses a two-tier system: every article gets a heuristic bias score from keyword analysis, and priority articles (high overlap across 3+ outlets or strong heuristic signal) get full LLM analysis from B.I.A.S. and V.E.R.I.F.Y.
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quick v1
Jul 22, 2026