greenhouses

Where are my super-techno-greenhouses and hydroponic farms that can provide fresh, tasty crops throughout the year and the continent?

But it is a small audience, these greenhouses will never feed large numbers of people.

That would certainly jive with the Oxygen creating greenhouses that he was playing with.

The costs with hydroponics greenhouses are so high that it doesn't make economics sense to grow food, only much higher value crops like flowers.

I assume it must be or we'd at least occasionally hear of greenhouses resulting in explosions?

Imagine hydroponic greenhouses in some wasteland growing canola, for example.

I always thought we'd be living in greenhouses and digging for minerals and fossils.

There are certainly advantages to large commercial greenhouses etc...

They could cleanly power greenhouses even in the arctic.

Unless you have very large advances in material science (cheap, sturdy materials to pump out large greenhouses cheaply and sustainably) and energy (cheap solar pv/thermal, wind, geothermal).

Even more conventional greenhouses, however, should help somewhat.

This can't possibly be cheaper than traditional greenhouses?

"The total area covered by Arabica and other types of coffee is about 400,000 hectares." [1] "Almería in southern Spain has developed the largest concentration of greenhouses in the world, covering 26,000 hectares" [2] So, a small town in southern Spain is within 5%.

Greenhouses build up heat because the glass prevents convection.