GnRH stimulates the pituitary gland to produce follicle stimulating hormone (FSH), the hormone responsible for starting follicle (egg) development and causing the level of estrogen, the primary female hormone, to rise.
The Great Alaska Earthquake lasted for nearly five minutes and registered a magnitude of 9.2, still the largest ever recorded in North America and second only to the 9.5-magnitude quake that struck Chile in 1960.
7.0 quake recorded in Alaska's Aleutian Islands. The village of Atka on Atka Island, Alaska. Officials say a magnitude 7.0 earthquake has rocked Alaska's Aleutian Islands with a jet-like rumble that shook homes and sent residents scrambling for cover. There are no immediate reports of damage or injuries from the major temblor at 8:25 a.m. Friday, local time. (AP Photo/Alaska Volcano Observatory/U.S.