Letterboxing? It's treasure hunting for nature fans
September 26, 2015, 2 p.m. by John Donovan
Letterboxing offers a fun and arty romp through nature.
Rock's 'humming' can reveal how healthy it is
September 21, 2015, 12:43 p.m. by Elizabeth Howell, LiveScience
The noninvasive checkup just requires some seismometers and a patient ear.
Hidden chain of volcanoes found in Australia
September 16, 2015, 9:55 a.m. by Tia Ghose, LiveScience
The newly discovered volcanoes will give fresh insights into the volcano creation process.
How do you clean up a contaminated river?
August 13, 2015, 10:10 a.m. by Stephanie Pappas, LiveScience
Officials are working to stem the flow of heavy metal-laden wastewater in Colorado.