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.

Researchers presented new findings at the European Society of Cardiology meeting showing that laughter therapy can improve some measures of heart health in people with coronary artery disease. In the study, patients took part in guided laughter sessions while researchers measured inflammation markers and cardiovascular performance before and after. The reported results included lower inflammation and improved indicators of heart function after the laughter interventions.

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.

Scientists have identified Burgessomedusa phasmiformis as the oldest known swimming jellyfish, based on fossil specimens recovered from the Burgess Shale in Canada. These animals lived more than 500 million years ago during the Cambrian period. Researchers classify them as medusozoans, the group that includes modern jellyfish, and say the fossils provide direct evidence that jellyfish-like animals had already evolved by that time.

Scientists and doctors point out that many health problems run in families, and the diseases now affecting older baby boomers can offer a warning about what people might face later in life. Advances in DNA sequencing make it possible to find gene variants that raise the chances of heart disease, diabetes and some cancers. Identifying those risks early gives doctors and patients options for monitoring, preventive treatment and tailored medical care.