It is not unusual for swarms of small earthquakes to precede a volcanic eruption. They can reach a point of such rapid succession that they create a signal called harmonic tremor that resembles sound made by various types of musical instruments, though at frequencies much lower than humans can hear.
The following article is the first in a series of four that is being published this week. The subject is Jim Cobb and his patented oil spill techniques and equipment and the government's and oil industry's response to it.
Word of the Week Lesson 16:3 Qecengluni – Run Uswiillraraat cecengtaartut. – Kids are always running around. (Click sentence to hear Alutiiq words spoken) In classical Alutiiq society, runners passed important news from one village to the next. Elders recall young men running along the beach to carry messages to neighboring communities. When they arrived, […]
DURHAM, NC – Some blue whales off the coast of California change their behavior when exposed to the sort of underwater sounds used during U.S. military exercises. The whales may alter diving behavior or temporarily avoid important feeding areas, according to new research.