Decipher the mystery of the stone
On the dry lake in the Death Valley of the state of California (USA), mysteriously moving stones create long streaks on the sand. There are trails to 182m. How these stones moveThe 'fiber optic network' helps thousands of people avoid landslides
It is estimated that about 8,000 people die each year from landslides. While many others have very few ways to get rid of these horrifying disasters.