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 Harvesting 200 – 400 liters of water per day from Fog Revolutionary Microalgae Lamp That Absorbs CO2 OruKayak – The Foldable Kayak Elon Musk Wants to Design Rockets Like Iron Man Milkmaid – Smart Jug Texts You When The Milk Goes Bad Levitating Particles as Pixels