A recent report estimated that vultures are worth $1.8 billion a year to certain ecosystems in southern Africa. Here's why.

Looking for a place to bike along the coast in California? Head to this new car-free park in San Francisco that is a biker's ...

Getting there: Walk round the promenade from either San Antonio or San Antonio bay resort. On the left end (looking out on sea) you can park for free along the surrounding streets, which in summer ...