Terran technology tree

Colonization Tree

 * Advanced Construction - Boosts to manufacturing improvements and starbase modules
 * Institutional Research - Research improvements and starbase modules
 * Agricultural Adaptation - Food production improvements
 * Xeno Biology - Contains empire-wide boosts to fertility and fertility improvements
 * Environmental Engineering - Contains colony development improvements and techs to colonize difficult planets

Engineering Tree

 * Ion Drive - Contains engine modules and ship speed manipulation techs
 * Interstellar Survey - Contain precursor relic bonus techs and sensor techs
 * Life Support - Life support and starbase area of effect techs
 * Zero Gravity Construction - Larger ship hull sizes and repairs
 * Interstellar Logistics - Carriers, Logistics, and Mining

Warfare Tree

 * Weapon Systems - Standard Weapons
 * Militarization - Planetary Invasions/Fortification
 * Defense Systems - Standard Defenses

Governance Tree

 * Interstellar Governance - Unlocks bonuses to manufacturing, research, and/or influence
 * Diplomacy - Unlocks diplomatic treaties and bonuses
 * Cultural Influence - Bonuses to Influence
 * Xeno Economics - Income with some Influence
 * Interstellar Trade - Trade (w/ 1 Tech that lets you specialize in Research)
 * Xeno Entertainment - Focuses on Approval & Tourism