We explore a 5D Brans-Dicke scalar cosmology by conjecturing that the four-dimensional Hubble parameter varies as H = εφ s , ε ∈ R and s is some unknown power index and that the extra-dimensions compactify as the visible dimensions expand as b(t) ≈ a x (t), x ∈ R − . We mainly discuss the case x = −1. For critical values of ε close to unity, it was observed that the acceleration of the universe occurs at redshift close to z = 0.8 which indicates that in our model, accelerated expansion of the

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... iverse began only recently. Several interesting points are revealed and discussed in some detail.