This is what those three connected spheres are:<p><a href="http:&#x2F;&#x2F;www.theverge.com&#x2F;2013&#x2F;10&#x2F;24&#x2F;5023454&#x2F;amazon-giant-biodome-design-board-approval" rel="nofollow">http:&#x2F;&#x2F;www.theverge.com&#x2F;2013&#x2F;10&#x2F;24&#x2F;5023454&#x2F;amazon-giant-biod...</a>