"Well, in the actual [snail] shell, the pattern is laid down by a line of pigment-producing cells on the growing edge of the shell. And it seems that what happens can be captured rather well by a cellular automaton rule."

"The first recorded game of conkers using horse chestnuts was on the Isle of Wight in 1848. Until then, children used snail shells or hazelnuts."

"The Leeds team has established genetic differences between the colonies and evidence that "divorce" is imminent."