I tested 12 essential oil diffusers to compare their scent quality, design, ease of use and functionality. Three emerged as the best for most people.

Water treatment plants, like Mandan’s, must meet strict standards outlined by the Environmental Protection Agency to provide ...

If that first delicious cup of coffee from your Keurig is now only a distant memory, dissolved in murky flavors and sluggish ...

Growing urban populations, more public awareness of pollution and ambitious redevelopment plans propel big drinking water and wastewater treatment investment in two key cities.