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2020
Evacuation backpack - what is it good for?  The evacuation backpack will be useful in the event of a terrorist attack or natural disaster - earthquake, tsunami, hurricane, flood, landslide, explosion, fire and the like. Many are experiencing natural disasters for the first time in their lives and others will yet experience them.

2019
How many onions should I cut?  Often we can't imagine how many small onions we should cut instead of the big one. Luckily, we can calculate this using a sphere volume formula. 1 large onion equals 8 small ones.

2018
Travelling to Mars  2030 - 2039 is an initial date for the beginning of a settlement on Mars. There is water on Mars. Thanks to it, the settlement on Marse will be easier. Two types of buildings will be built - on the surface and below it. There will be plants and trees grown inside that will produce oxygen.

2017 - 2015
Acupressure mat  Use acupressure mat for your back and neck pain relief. Place it onto mattress and pillow. Lay down on it free of clothing.