The Richat Structure, also known as the Eye of the Sahara or blue eye of Africa, is a peculiar geological formation in the Sahara desert in Mauritania near Ouadane. Due to its size, the Eye is visible from space and it is a landmark for astronauts, helping them to realize thei position over the vast 3,600,000-square-mile desert.
On Friday October 17th, 25 years have passed from the devastating - magnitude 6.9 - Loma Prieta earthquake. To commemorate the 25th anniversary of the earthquake, which killed 63 people and left thousands homeless, events were organized across the Bay Area.
Three Slovakian hikers claim to have found an unexplored cave, while walking in the forest close to the village of Borka in Slovakia. One of them, photographer Robert Nemeti took pictures from inside the cave, which are presented in the photo gallery below!
The Aral Sea, once the fourth largest lake in the world is today rapidly shrinking, as a result of the diversion of the two major rivers feeding it, back in the '60s. The effects of the Aral Sea desiccation are widely felt in the local population and the ecosystem, transforming the area in the borders between Kazakhstan and Uzbekistan into a vast toxic desert. Watch the video below with NASA's satellite pictures of the area, showing the water level changes over the years!
Being along the Pacific "Ring of Fire", Costa Rica has been often hit by destructive earthquakes causing extensive damages and many casualties. The country's National Seismological Network (RSN) has been closely monitoring the seismic activity and has recently released a list with the 70 "most historic" earthquakes that rattled the country. A selection of old photos showing the destruction of some of the strongest quakes presented below!
A tailings pond at the Mount Polley gold and copper mine in central B.C. failed last month and released millions of cubic meters of waste water, triggering a state of emergency for the local community. An aerial footage taken from the affected area reveals the extent of the spill, while residents and experts express their fears about the long-term impact on the environment and local fish stocks. Grand Chief Stewart Phillip of the Union of B.C. Indian Chiefs stated that "Like the Exxon Valdez, Mount Polley will be synonymous with one of the most disastrous environmental events in British Columbia".
Monsoon season, which is currently hitting India, Pakistan and other Asian countries, causes extensive floods and triggers landslides, with detrimental effects for the citizens of the affected countries. A new mathematical model, currently under development, aims in assessing the extent of anticipated damage and improving the civil protection and warning system.