The earliest known references to the islands as a group appeared in the writings of sea-farers from the ancient Greek colony of Massalia. The original records have been lost; however, later writings, e.g. Avienus's Ora maritima, that quoted from the Massaliote Periplus (6th century BC) and from Pytheas's On the Ocean (circa 325320 BC) have survived. In the 1st century BC, Diodorus Siculus has Prettanike nesos, "the British Island", and Prettanoi, "the Britons". Strabo used (Brettanike), and Marcian of Heraclea, in his Periplus maris exteri, used (the Prettanic Isles) to refer to the islands. Historians today, though not in absolute agreement, largely agree that these Greek and Latin names were probably drawn from native Celtic-language names for the archipelago. Along these lines, the inhabitants of the islands were called the (Priteni or Pretani). The shift from the "P" of Pretannia to the "B" of Britannia by the Romans occurred during the time of Julius Caesar.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Although the original records have since been found, later writings that quoted from what are lost?
Ah, so.. unanswerable

There are more than 200 thermochemical cycles which can be used for water splitting, around a dozen of these cycles such as the iron oxide cycle, cerium(IV) oxidecerium(III) oxide cycle, zinc zinc-oxide cycle, sulfur-iodine cycle, copper-chlorine cycle and hybrid sulfur cycle are under research and in testing phase to produce hydrogen and oxygen from water and heat without using electricity. A number of laboratories (including in France, Germany, Greece, Japan, and the USA) are developing thermochemical methods to produce hydrogen from solar energy and water.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What countries are testing this?
Ah, so.. France, Germany, Greece, Japan, and the USA

Some researchers believe that the first Russian settlement in Alaska was established in the 17th century. According to this hypothesis, in 1648 several koches of Semyon Dezhnyov's expedition came ashore in Alaska by storm and founded this settlement. This hypothesis is based on the testimony of Chukchi geographer Nikolai Daurkin, who had visited Alaska in 17641765 and who had reported on a village on the Kheuveren River, populated by "bearded men" who "pray to the icons". Some modern researchers associate Kheuveren with Koyuk River.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Whose expedidion potentially landed in Alaska during a storm and founded a settlement in 1684?
Ah, so..
unanswerable