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The Best Frost Free Fridge Freezers Frost-free freezers do away with the requirement for manual freezing, which is messy and time consuming. They also function more efficiently than non-frost-free models. You should search for freezers with food preservation features. For example, blue light technology mimics sunlight and helps fruits and vegetables to retain vitamins and nutrients. Fast cool and speedy freeze settings are useful too. Samsung RF-F5500X With its sleek design and nimble technology, the Samsung B

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We describe a polar Moon base habitat using direct solar energy for construction, food production and atmospheric revitalization. With a growing area as large as 2000 m2, it could provide for 40 or more people. The habitat is built like the ancient Roman Pantheon, a stone structure with a top circular oculus, bringing in focused sunlight that is spread out to crops below. The conical, corbelled structure is built from cast regolith blocks, held in compression despite the large internal atmospheric pressure by a regolith overla