Sentences with phrase «most ancient substances»

Natural diamonds are among the hardest and most ancient substances on earth — some specimens were formed three billion years ago.

Not exact matches

The fossils discovered in these formations include stromatolites — layered rock structures created by communities of ancient microbes — and several other signatures of microbial life, such as a microbial palisade texture preserved in stone, and bubbles that were most likely trapped in a sticky substance produced by ancient bacteria.

Actually, it's a kind of reverse Krypton: An ancient meteor strike brought the miracle substance vibranium to the area, enabling Wakandans to build the most advanced civilization on Earth and cloak it under an invisibility shield.

Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay.