BOSTON -- Park rangers who patrol the Cape Cod National Seashore around Provincetown and Truro are trying to come up with strategies to discourage increasingly common incidents of illegal public sex on area beaches. They say complaints about explicit, open public sex on the national park beaches have tripled in the past decade, with activity ranging from flashing to men's public orgies. The rangers have been trying to crack down by enforcing a federal misdemeanor charge of disorderly conduct, which prohibits obscene acts, the Cape Cod Times reported. Seashore rangers issued 132 citations for public sex acts last year, compared...