The best way to learn to spot a conspiracy theory is to make one yourself.
Pick a real news story. On the next step you'll choose who's behind it and why. Then walk through the four moves real conspiracists use, with a debunk on every step.
Choose whichever real-feeling headline your imagination will run wildest with. Don't overthink it.

A new international nature fund set up under the Global Environment Facility aims to help developing countries meet the biodiversity targets agreed at the COP15 summit in Montreal. The fund’s creation was one of the most-contentious issues at those talks, prompting walkouts and repeated negotiations between wealthy and poorer nations. So far, only Canada and the United Kingdom have pledged money, leaving roughly $40 million still needed to capitalise the fund ahead of COP16 next year.

The Loch Ness search, described as the biggest in fifty years, took place over the weekend at Scotland’s Loch Ness. The Loch Ness Centre partnered with Loch Ness Exploration to run the operation and invited volunteers to join boat patrols that ran from about 10 a.m. to 6 p.m. Organizers set up 17 official spotting points around the loch and asked the public to report any unusual sightings to the survey team.

An annual YouGov-Cambridge Globalism Project survey, reported by The Guardian, finds that support for populist ideas has fallen across several European countries over the past three years. The survey measures attitudes like distrust of elites, favoring strong national control, and opposition to immigration. In the latest cycle, populist sentiment declined in ten European nations, indicating fewer people now express broad populist beliefs than in earlier years.

Garry Kasparov, the Russian-born former world chess champion, has publicly endorsed Anatoly Fomenko’s “New Chronology,” a radical revision of world history. Fomenko’s thesis argues that much of what we call ancient history is misdated or duplicated and that the actual historical timeline is far shorter than commonly believed. Kasparov says he finds the questions it raises important and plans to spend more time promoting these ideas as he moves away from professional chess.