Inventions

methane emissions
Clay from kitty litter pulls methane emissions from air
china's artificial moon
China builds “artificial moon” on Earth
space rover
MIT is testing a levitating space rover
smart mailbox
New smart mailbox is built for drone deliveries 
astronaut sleeping bag
Clever sleeping bag design might save astronauts’ eyesight 
How should we measure innovation?
7 scientists we are thankful for this Thanksgiving
DNA vaccines
How a BBQ lighter can make DNA vaccines more powerful
powered exoskeleton
Powered exoskeletons may be the ultimate fitness machines
satellite launches
The future of space launches: a giant spinning arm in a vacuum