Active lava flows at volcanoes might move several feet per minute when hot. As the lava flows cool, they slow down to a rate of only a few feet per day. Geologists in Hawaii keep a close watch on active lava flows. They use handheld global positioning system (GPS) receivers to map lava flows as accurately as possible.
Libra, Aquarius, Gemini. Religion & Spirituality. Air is the element of the mind, and airy types know that everything begins with an idea. These are the idea people, who breeze in and offer a fresh perspective on the situation at hand.
Definition of Gemini for English Language Learners. : 1  the third sign of the zodiac that comes between Taurus and Cancer and has a pair of twins as its symbol. : 2  a person born under the sign of Gemini : a person born between May 21st and June 21st.