Pat gets a no-prize in a bucket for bringing us news on scientific research about Olivia's favorite beach item... sand castles:

Anyone who has built sandcastles learns they hold up best if a little water is mixed with the building material. But until now scientists couldn’t agree why.

Water holds grains of sand together by forming “liquid-bridges” between the contact points of the grains, a new study finds. The tension forces of the bridges creates an attractive force between the grains that is absent in dry sand.

The article also includes the "magic formula" for the best castle-building sand.