Aside from that 19,000-pound Chinese satellite set to crash down this weekend, there are many more pieces of space junk in orbit.

Radar scans showed that a San Francisco high-rise sank twice as fast as previously thought.

The radio signal that is the lifeblood of the Global Positioning System originates from a constellation of twenty-four satellites, orbiting more than twelve thousand miles above Earth. When it reaches the ground, after about sixty-seven milliseconds, it is so weak as to be almost imperceptible. (G.P.S. experts often compare processing the signal to trying to read by the light of a single bulb in a city...

Accurate sea level measurements are more critical than ever, but there are a limited number of radar satellites designed for that purpose. However, a team from the UK's National Oceanography Centre (NOC), University of Michigan and NASA's Jet Propulsion Laboratory have discovered a new way to do so using much cheaper and more plentiful GPS satellites. The technique is called GNSS-R, and involves bouncing low-powered signals from GPS satellites off of the...

The satellite North Korea fired into space on Sunday is "tumbling in orbit" and incapable of functioning in any useful way, a senior U.S. defense official told CNN. Sunday's launch of the long-range rocket triggered a wave of international condemnation and prompted strong reaction from an emergency meeting of the U.N. Security Council. North Korea maintained the launch was for scientific and "peaceful purposes."

Unsustainable business model cited in decision to close, as global network announces a new digital drive in US market

Indonesia has been aflame for a couple months now. That happens every fall—the country’s fire season is severe—but this time around, things are the worst they’ve been in almost two decades. This year’s crazy-strong El Niño has desiccated the region’s peat beds, while palm oil plantations exacerbate the problem by cutting down trees and draining the normally soggy land.