What the picker changes

Top topics digest — the cards score the selected period against the prior 4 weeks.
12-week heatmap & outlet matrix — show the 12 weeks ending at the selected week (they slide back with the picker, they aren’t a fixed snapshot).
Per-topic volume / alias drift — same 12-week trailing window, anchored on the selected period.
Coverage gap quadrant — scores the selected period against the 12 weeks before it (not including it).
Anomaly cards — only show alerts the detector fired during the selected period. Quiet weeks legitimately show none.

What stays as-is

Outlet orientation strip / lean colours — context-only, drawn from the last 12 weeks of activity regardless.
Co-occurrence graph — recent-activity anchored, not picker-driven.
Source & topic profiles — all-time data for the topic; the picker doesn’t affect them.

Rolling 7 days is a sliding live window for “current vibes”; switch to Weekly to compare specific weeks side-by-side.

Weekly Rolling 7 days

live window

Topic

Outdated Drinking Water Standards

6 items · 4 aliases · peaked week of 26 Apr 2026 · first seen 29 Apr 2026

Greenpeace Aotearoa is returning to Southland for free drinking water testing to detect nitrate contamination, highlighting the health risks posed by intensive dairying and synthetic fertilisers, and calling for updated, science-based drinking water safety standards.

Stance breakdown Methodology →

How the framings classify across 3 articles. Each framing is labelled by a small AI stance classifier; see the methodology page for details.

33%

67%

Supportive 1 Critical 2

Volume by source orientation Methodology →

Stacked weekly counts; colour by lean. “n/a” covers government and iwi-Māori sources where lean isn't applicable.

Alias drift

How this topic has been named, week by week. A new alias winning out is usually a framing shift.

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Sample framings

Up to 12 framings spread across orientations. Each framing is a short phrase the topic extractor generated to characterise the piece's stance — not a quote from the source. Click through to read the original.

greenpeace-nz Centre-left

scientifically obsolete safety threshold

Greenpeace free nitrate contamination water testing returns to Southland in May

28 Apr

daily-blog Left

scientifically indefensible policy

Greenpeace free nitrate contamination water testing returns to Southland in May

30 Apr

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