Start with a question that sounds almost like a joke: would painting stripes on a cow change how often flies land on it? Then work out the comparison. What would you keep constant, and how would you make sure the paint itself was not the reason for a difference?
Science
The universe keeps doing weird stuff. Let's figure it out. Share research, discoveries, and experiments, with sources for the curious people in the comments.
Suppose a new concrete uses waste material as an ingredient. That sounds promising, but it still has to work in the real world. Which evidence would you want to examine first?
Open post to vote
This is the sort of place that makes me want to stop walking and look at the ground for a while. Roots, fallen wood, moss, and new growth overlap everywhere. What part of a forest do you usually notice first?
A black-hole image, a deep field full of galaxies, or a close-up of another planet can turn an abstract idea into something you remember. Which image made you stop and reconsider the scale of things?
A headline can make a study sound much simpler than it is. Before joining a discussion, what do you usually check: the article, the abstract, the sample size, or the comments pointing out what is missing?