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 report that reef-dwelling hogfish have light-sensitive cells embedded in their skin, allowing the animals to sense brightness and adjust their colour without relying solely on eyes. The study, published in Nature, shows this skin-based photoreception can continue to influence colour change even after death. Hogfish live in Atlantic reefs and can shift hues in milliseconds. Those rapid changes aid camouflage, social signalling and may help with temperature regulation and attracting mates.

Researchers led by Itzhak Khait at Tel Aviv University have found that some plants produce audible, high-frequency sounds when they are stressed or damaged. The team tested tomato and tobacco plants and recorded ultrasonic clicks that arise during drought stress or after cutting. Sensitive microphones and acoustic analysis allowed detection of these sounds from as far as five meters, suggesting plants may broadcast information about their physical condition.

A Kansas judge has ordered authorities to delete all electronic copies made from files seized during a police search of the Marion County Record, a small local newspaper. The searches, carried out nearly two weeks earlier, removed computers and cellphones from the paper’s office. The court order requires that digital copies created from those devices be destroyed, limiting how officials may keep and use material gathered in the raid.

Google is expanding a tool called "Results about you," first introduced last year to help people remove personal information from Search results. The new version will actively scan the public web for instances of a user’s personal data and send alerts so they can request removal. Google says the feature is currently available in the United States in English and will be rolled out to more regions over time.