Latest Geography of Iowa Stories
The loss of wetlands in the prairie pothole region of central North America due to a warmer and drier climate will negatively affect millions of waterfowl that depend on the region for food, shelter and raising young.
The gradual warming of the Upper Midwest could cut the duck population in half as early as 2050, according to a new study published in the journal BioScience.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.