In physical geography, a wetland is an environment "at the interface between truly terrestrial ecosystems and aquatic systems making them inherently different from each other yet highly dependent on both". In essence, wetlands are ecotones. Wetlands often host considerable biodiversity and endemism. In many locations such as the United Kingdom and USA they are the subject of conservation efforts and Biodiversity Action Plans.The United States Army Corps of Engineers and the United States Environmental Protection Agency jointly define wetlands as "those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetations typically adapted for life in saturated soils. Wetlands generally include swamps, marshes, bogs, and similar areas."

The star-nosed mole can identify and eat food in a mere 230 milliseconds. Click on "star-nosed mole theater" to see some incredible video on the animal in action.

Tavasci Marsh, an ancient oxbow of the Verde River, teems with life, from cattails and cottonwoods to uncountable species of birds and animals drawn to the plentiful food, water and shelter.

When it comes to seasoning food, there's no shortage of salt options. But when it comes to health, it doesn't matter if it was mined in Kansas, solar-evaporated from the Mediterranean Sea or hand-harvested in French marshes. Salt is salt, the experts say, and it's bad for your health. Chances are you're eating way too much of it.

It was 30 years ago Monday that a pack of Wrigley's gum was scanned at the Marsh supermarket in Troy, Ohio. It has grown from being used on foods to now helping hospitals give the right medicines.