Estimates of the historical value of a user put the IPO hype in perspective.
Cheap sequencing technology is flooding the world with genomic data. Can we handle the deluge?
Wind and solar power are ramping up quickly, but the world's demand for electricity is growing much faster.
Google reveals how often governments ask it to banish things from its services and how often it complies.
Human exploration is the most visible use of spaceflight, but business and defense satellites fill the sky.
Decisions about future energy sources will need to factor in water consumption as well as greenhouse-gas emissions.
Some countries generate more inventions than their economic stature might indicate.
Facebook still has lots of room to grow.
Increased demand for wireless bandwidth is forcing regulators to get creative.