I will present Aspero and Mota's recent work in which they obtain a model of set theory which satisfies $|\mathbb{R}| > \aleph_2$ and in which the filter of closed unbounded subsets of $\omega_1$ has a strong combinatorial property. Specifically, in their model if $D_\alpha \subseteq \alpha$ is closed for each $\alpha \in \omega_1$, there is a closed unbounded $E \subseteq \omega_1$ such that if $\alpha$ is a limit ordinal, then there is an $\alpha_0 < \alpha$ such that $E \cap (\alpha_0,\alpha)$ is contained in or disjoint from $D_\alpha$.