There is such a term like Earth analog which is the synonym for Earth-like planet (I found it in Wikipedia and the first poster should try using it), there are no good specifications inside that specific article, although the round talk under "Attributes and Criteria" is quite similar to the above posters.
http://en.wikipedia.org/wiki/Earth_analog#Surface-water_and_hydrological_cycle
How about somebody define it then?
There is something a little bit more specific in:
http://en.wikipedia.org/wiki/Earth_Similarity_Index
- At least you can say for sure that KOI 736.01 has Earth Similarity Index (ESI) of 0.98 and Standard Primary Habitability (SPH) of 0.63.
Everlasting is a lame use of words anyway, being overused nowadays by
China is doing this too... they know that the US has the ability to stop food shipments at any time, so have been developing technologies to make arable land in the Sahel and other parts of Africa to feed their population, and part of that is automated tilling/planting/irrigation/harvesting.
WHAT?
1. Sahel is a part of the Sahara desert with probably the worst famine problem in the world. Part of the problem is that the land is being over used and then turns into desert.
Over-farming, over-grazing, and over-population of marginal lands and natural soil erosion have caused serious desertification of the region.
-http://en.wikipedia.org/wiki/Sahel
2. Now, are we aware that Eurasia and Africa aren't one little island west of USA? The closest land route between China and Sahel would be something like 4500km and it would go over the hills, (other) deserts and through countries with not so friendly governments, bandits and areas with no roads. The sea transport would take months.
3. In EU the overproduced wheat (side effect of the EU's agricultural market stabilization measures) is being burnt because it would be too expensive to ship it to
4. I am probably answering to a troll, again. I am not going to delete the post this time.
How many NASA managers does it take to screw in a lightbulb? "That's a known problem... don't worry about it."