This improbable membrane can trap flies in a jar—and odor in a toilet Reverse filter lets bigger things through, hold back smaller things. Facebook Prev Article Next Article Inventions Checkout these cool gadgets... Related Posts Pedestrian Guidance System For Crowded Places GoSun Stove: Portable, High Efficiency Solar Cooker Flexible Material Works as a Speaker This New ‘Perfect’ Battery Has Experts Stumped UltraRope Could Make Kilometer-high Elevators Possible See-through Car Interior
