How strange. I introduced clover to my lawn a few years ago for its nitrogen fixing properties, and since then have spent many idle minutes (probably adding up to hours) searching for four-leaf clovers.

I have never found a single one, but easily picked out at least one in each of the pictures in the article in just a few seconds. Thinking this might be a breakthrough I went and snapped a few pictures of clover patches, but alas can't spot any. I suspect I'm getting subconscious hints from the author's framing of the photos.