Further articles on the same subject
Flying / Pacific Ocean / Credit / Johnson
Which of our planet’s extraterrestrial scars is the oldest? New evidence suggests this one in Western Australia is more than 2.2 billion years old.
After receiving more than $150 million in US military funding to develop a reusable spaceplane named Phantom Express, Boeing said Wednesday it's ending work on the vehicle, effectively killing a program the military hoped would launch small satellites.
From our archives: Experts disagree on the how much carbon will be trapped through reforestation efforts. (2/2)