One of the simplest hypotheses used to explain species coexistence is the competition–colonization trade-off, that is, species can stably coexist in a landscape if they show a trade-off between ...

GameSpot may get a commission from retail offers. Civilization IV: Colonization proves that you don't need an advanced technology tree with the Manhattan Project or manned spaceflight to completely ...

ALBUQUERQUE, NEW MEXICO -- An initial step towards the creation of mass transit beyond our planet is the emerging public space travel market. At present, a number of technologies are being developed ...