Caption: A liquefied natural gas (LNG) tanker at a U.S. port. LNG tankers present a unique set of safety and security concerns.LNG is more flammable than oil[v] causing great concern for the safety of these tankers when near large populations and infrastructure (i.e., at ports in urban areas).
. The reference is probably the strong, smoky odour of thyme. Yet there is also another, unrelated explanation that the Greek name actually comes from Old Egyptian tham, which denoted a plant used in the mummification process.
The Devonian Period. The Rhynie Chert in Scotland is a Devonian age deposit containing fossils of both zosterophylls and trimerophytes, some of the earliest vascular plants. This indicates that prior to the start of the Devonian, the first major radiations of plants had already happened. The oldest known vascular plants in the Northern Hemisphere are from the Devonian Period.