Saturday 17 October 2026 · Edition of the day

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The Skeptic's Daily

The day's biggest stories, taken apart. For each one: what is actually established, what is only asserted, the questions worth asking — and a plausibility score for the central claim, given everything currently known.

Stories
1
Average plausibility
91%
How to read the score
It rates how well the core claim is evidenced — not how important the story is, nor whether it is good or bad news.
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01ScienceSouth America

Brazilian Amazon deforestation falls to lowest recorded level

Several outlets report a historic fall in forest clearance ahead of Brazil’s presidential run-off, though the supplied extracts offer little methodological detail.

Al Jazeera and the Guardian report that deforestation in the Brazilian Amazon has reached its lowest recorded level. DW reports 3,335 square kilometres cleared in the year ending in July, while Al Jazeera gives a 42% year-on-year decline. The BBC also reports a record fall ahead of a key election.

What holds up

  • ✓The downward trend is reported by all four outlets; the Guardian, Al Jazeera and DW agree that clearance has reached a record low.
  • ✓The Guardian identifies new government data as the basis of the finding and says records began in 1988, consistent with DW’s historical comparison.

What doesn't yet

  • ?The 42% decline and 3,335-square-kilometre total each appear in only one supplied item; the underlying data and methodology are not provided.
  • ?A record fall and a record-low total are different measures. The BBC headline emphasises the former, while the other outlets emphasise the latter.

Ask before you share

  • →Do the percentage decline and cleared-area total cover the same period and geographical boundaries?
  • →What do the underlying government data show about measurement methods and longer-term trends?

Sources & original reporting

  1. [1]BBC News · Published 17 Oct 2026 · bbc.co.uk
  2. [2]Al Jazeera · Published 17 Oct 2026 · aljazeera.com
  3. [3]The Guardian · Published 16 Oct 2026 · theguardian.com
  4. [4]DW · Published 16 Oct 2026 · dw.com