Back in May I pointed out a paper on spacial graphs  that answered a question I had asked earlier: whether it is possible to embed a theta graph in the 3-sphere so that each of the three knots that result from removing edges is a trefoil. (They actually prove a more general property for a larger family of graphs.) Akira Yasuhara, one of the authors of the paper has just sent me a link to a picture of a theta graph containing three trefoils. It’s surprisingly simple. Thanks Akira.
 Realization of knots and links in a spatial graph. (English summary) Topology Appl. 112 (2001), no. 1, 87–109.