water Archives - Page 3 of 3

Multiple outcroppings of rocks like this one (termed a pebble conglomerate) were observed along the first 275 meters traversed by the rover with the high-resolution Mastcam. (Submitted photo)

KNOXVILLE—Despite satellite images that show vast networks of channels, past Mars rover missions have shown limited evidence for flowing water on Mars.

Now, rocks analyzed by NASA’s Mars Curiosity Rover team, including Linda Kah, associate professor of earth and planetary sciences at the University of Tennessee in Knoxville, provide solid evidence that Mars had rivers or streams. This suggests that the environment was drastically different than today’s cold and dry conditions, with the potential to support life.

A paper on the team’s findings is published in this week’s edition of Science magazine. [Read more…]

Some city leaders in Oliver Springs want to remove fluoride from the town’s water supply, but several area dentists and doctors are trying to keep it in, according to WYSH Radio in Clinton.

The Oliver Springs Water Board, which met Thursday to discuss the issue, voted earlier this year to remove fluoride from the water supply but later learned they had violated state law by not providing customers with 30 days notice or holding a public meeting, WYSH said.

The mayor and some other city officials said they have concerns that fluoride can be hazardous, the radio station said. Several dentists and doctors attended the meeting and asked the Water Board to keep fluoride in the water because it has been shown that fluoride in the public water supply can prevent tooth decay and other oral health problems.

[Read more…]

Mars Curiosity Rover provides strong evidence for flowing water

Oliver Springs to keep fluoride in water for now