The sun beats down relentlessly on my front yard, ruining any attempts at growing the vile green weed known simply as grass.  Just for kicks I've tried a variety of methods to encourage the growth of this simple organism:  Planting more seeds, spreading a natural fertilizer, aerating.  Nothing really seems to make much of a difference, which is fine because I've only mowed the lawn like twice this summer.  But what baffles me is this:  If grass has such a hard time growing in my lawn, why does it grow so effortlessly and abundantly through the cracks in my sidewalk? #nature