Last week the question was: What is this weed?
This is Paraguayan purslane. This is a prostrate growing weed with thick, fleshy leaves. We usually find this weed in sandy areas. Its close relative, common purslane can be a big pest in agricultural fields. For more info take a look at this page.
Here is this week’s question: What is going on in this microscope photo of some squash bug eggs?