The more involved the edit, the fewer pages an editor can complete per hour, and the more your project will cost. Depending on their level of experience and the level of edit required, an editor may charge anywhere from $15/hour to $100+/hour. A side note about the level of edit required: I have found the level of edit required can occasionally be a touchy subject with writers.
'Oldest living thing on earth' discovered. Ancient patches of a giant seagrass in the Mediterranean Sea are now considered the oldest living organism on Earth after scientists dated them as up to 200,000 years old. Scientists say a patch of ancient seagrass in the Mediterranean is up to 200,000 years old Photo: Getty Images. By Jonathan Pearlman, Sydney.
The Oldest Known Living Organisms In The World. By Stephen Luntz. Among the world's living things, humans get a better go than most. To mayflies or perennial plants 70 years would seem an unimaginable length of time. However, there are some living things for whom we are just a brief, and possibly annoying, blip. Jonathon is a Seychelles giant tortoise (Aldabrachelys gigantea) residing on St Helena who is still plodding along at what is believed to be the age of 182. This makes him possibly the oldest living land animal, and a strong contender for oldest vertebrate.