Evros: Black swan spotted in the delta of the river
A rare case of a black swan making an appearance on the Evros - It lives mainly in Australia, Tasmania and New Zealand
Polylimnio: The “Blue Lake” of Messinia, Peloponnese (videos-photos)
Between mountains and trees somewhere in the Peloponnese hides a complex of lakes and waterfalls
NASA Research identifies dozens of underground lakes on Mars
"Either liquid water is common beneath Mars’ south pole, or these signals are indicative of something else"
