They come with eagle-eyed drones and high-precision instruments. Aided by satellites, they analyze gas emissions and the flows of molten rock. On the ground, they collect everything from the tiniest particles to "lava bombs" the size of watermelons that one of nature's most powerful forces hurl as incandescent projectiles.
By Yannis Kartalis
We are in a period of international tumult as global geopolitical balances have not settled after the end of the bipolar world.
At a time when there is a predominance of authoritarian leaders, untrammelled populism, and dangerous military moves, the overarching question for Greece in terms of security is, "What exactly is Turkey up to?"
Victory in the decisive double match was achieved by Karatsev and Rublev over Granollers and Lopez, after a reversal, 4: 6, 6: 2, 6: 4.
With this triumph of Russia, Serbia also found a place among the best eight, as one of the two best second-placed national teams.
Viktor Troicki's team has a better set quotient than Spain - 9-6 versus 9-7.
Alternate Foreign Minister Miltiadis Varvitsiotis slammed the Spain-Turkey defence agreement with the sale of a large Spanish aircraft carrier to Ankara following talks with Spain's State Secretary for the European Union Juan Gonzalez-Barba Perra in Seville today.
It was the first bilateral ministerial-level meeting since the 17 December agreement was signed.