How to get cat pee out of mattress

To remove the pee stain and scent, mix 8 oz of hydrogen peroxide, 3 tablespoons of baking soda, and 4 oz laundry detergent in a spray bottle. Spray it on the soiled area liberally and let it dry. Once dried, sprinkle more baking soda on the spot to absorb any residual wetness before vacuuming after several hours have passed.


Thanks to 3D printing, NASA can basically email tools to astronauts.

Getting new equipment to the Space Station used to take months or years, but the new technology means the tools are ready within hours.