Evidence for Flowing Water on Mars Grows Stronger. THE WOODLANDS, Tex. —Today's Mars is a frigid desert, a place where water—the key to life as we know it—has gone into hiding. Whatever water may have once existed on Mars in rivers, lakes or even oceans is now frozen into ice caps, locked up in hydrated minerals or buried in debris-coated glaciers. But last year compelling evidence emerged that when conditions are right, salty brines may persist to this day in liquid form at midlatitude regions on Mars. Alfred McEwen of the University of Arizona and his colleagues found tracks in high-resolution imagery that looked like liquid flowing downhill. At the annual Lunar and Planetary Science Conference being held here this week, the researchers provided an update on their search for and analysis of the mysterious features, which they call recurring slope lineae, or RSL.
"No one has come up with alternative models that they believe," McEwen says. ChronoZoom. ChronoZoom is an educational tool for teachers and students who want to put historical events in perspective. A great many resources have been created already in ChronoZoom for your enjoyment and enlightenment. Start Exploring Use ChronoZoom to get a perspective of the extensive scale of time and historical events relative to what happened around the world. Become an author yourself! New Teacher Resources RT @MSFTResearch: See how #Chronozoom helps students “think historically” & travel though time with 3 newly created curriculum modules http… #chronozoom is a valuable tool for illustrating Climate Change: @metanexus Anyone can author their small or Big History on the 14 Billion year timeline at - an open source project.
@BillGates Congratulations to the Big History Project. RT @BillGates: Big History is my favorite course ever. You don't have any favorite timelines yet. What a trip through a wormhole would look like. Lees_sun.jpg (940×598) NASA Video Traces Moon’s Evolution Over 4.5 Billion Years. Classroom Lessons.