Hornsby kept the spheres in his refrigerator, though that was later deemed unnecessary, as the balls of blue goo don't appear to melt at room temperature. British meteorological authorities say they are not the result of some kind of weather event, though there is speculation that they could be "marine invertebrate eggs" that stuck to a bird's feet and were carried into the air. Such eggs have been attributed to previous "strange goo" incidents, which apparently happen from time to time. In fact, according to the BBC, transmission of marine eggs via birds' feet is something that is well documented. But we smell something fishy.