Beautiful Haraz Road from Tehran to the northern city of Amol, Mazandaran Province has been situated in an excellent rocky district in center of Alborz Range of Mountains has mysteries along the coasts of the Caspian Sea.
The waxing and waning of sunspots form part of our Sun's natural cycle, but it's a phenomenon astronomers still don't fully understand. Now, new research has revealed that particular "terminator" events are what brings sunspot cycles to an end, and it means we could get better at predicting them.
Imagine exploring a wooded site along an Alaska stream or lake for evidence of animals. Maybe you'll see moose prints in the soil or a bit of wolf fur in a berry bush. But some species don't leave footprints. They still leave a clue. It's their DNA.
Researchers at the University of Arizona have discovered what causes and regulates collective cell migration, one of the most universal but least understood biological processes in all living organisms.