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Steelmaking is a major source of emissions. These companies are racing to fix it.
Featured in Space
Apollo 12’s Tuna Problem
Of all the foods to eat in a small spacecraft where the air is recirculated, tuna might be low on...
Rosetta’s Philae Lander Is In Trouble
Scientists are racing against the clock to inspect soil samples and get the lander un-stuck
Apollo 12’S Was A Launch With Lunches And Lightning Strikes
Forty-five years ago today, the second lunar landing mission, Apollo 12, launched from Cape Kennedy for the Moon’s Ocean of...
Meet Joe Engle, A Pilot Who Flew A Rocket Plane Into Space
On June 29, 1965, U.S. Air Force pilot Joe Engle qualified as an astronaut, though he wouldn’t join NASA’s astronaut...
Rosetta Mission Lands On Rubber Ducky Comet [Update]
The lander's harpoon anchors didn't deploy, but it looks like Philae will bounce back ... literally
Former ISS Commander: Private Spaceflight Must Move Forward
Astronaut Leroy Chiao explains what it will take for commercial passengers to fly into space
Operation Plumbbob and the Psychology of a Nuclear Blast
In the 1950s, part of developing the US military’s arsenal of atomic weapons was ensuring that the men who would...
Here’s How We’ll Touch Down On A Comet This Week (We Hope)
The Rosetta mission is about to land where no spacecraft has ever landed before.
Carl Sagan On What Life On Mars Would Be Like
Happy Carl Sagan day! Celebrate with this blast from the past in the pages of Popular Science
