A cheap fix to global warming is finally gaining support
Global support for one of the cheapest and most powerful climate actions is accelerating—and it couldn't come at a more urgent time.
Global support for one of the cheapest and most powerful climate actions is accelerating—and it couldn't come at a more urgent time.
Environment
Jun 19, 2023
27
1406
A massive new review of ancient atmospheric carbon-dioxide levels and corresponding temperatures lays out a daunting picture of where the Earth's climate may be headed. The study covers geologic records spanning the past ...
Earth Sciences
Dec 7, 2023
49
1352
An international team of scientists led by Oregon State University researchers has used a novel 500-year dataset to frame a "restorative" pathway through which humanity can avoid the worst ecological and social outcomes of ...
Earth Sciences
Jan 9, 2024
25
836
Little of the mixed consumer plastics thrown away or placed in recycle bins actually ends up being recycled. Nearly 90% is buried in landfills or incinerated at commercial facilities that generate greenhouse gases and airborne ...
Polymers
Oct 22, 2023
2
493
In a world of worsening climate extremes, a single red line has caught many people's attention.
Earth Sciences
Jun 13, 2023
3
729
The world's oceans, which have absorbed most of the excess heat caused by humanity's carbon pollution, continued to see record-breaking temperatures last year, according to research published Wednesday.
Earth Sciences
Jan 11, 2023
11
851
Climate modeling based upon Earth's current greenhouse gas emissions trajectory predicts a worst-case scenario of 4.3°C warming of the planet by 2100 if sufficient measures are not implemented. While the Paris Climate Agreement ...
A top panel of geologists has decided not to grant the 'human age' its own distinct place in Earth's geological timeline after disagreeing over when exactly our era might have begun.
Environment
Mar 22, 2024
4
1757
Deadly heat in the Southwest. Hot-tub temperatures in the Atlantic Ocean. Sweltering conditions in Europe, Asia and South America.
Earth Sciences
Apr 1, 2024
14
533
UConn Department of Natural Resources and the Environment researcher Wei Ren sees the interconnections between the systems in nature and how each component impacts the others. In Connecticut, rich in forests and farmland, ...
Ecology
Feb 20, 2023
5
198
A greenhouse (also called a glasshouse) is a building in which plants are grown. These structures range in size from small sheds to very large buildings. A miniature greenhouse is known as a cold frame.
A greenhouse is a structure with different types of covering materials, such as a glass or plastic roof and frequently glass or plastic walls; it heats up because incoming visible solar radiation (for which the glass is transparent) from the sun is absorbed by plants, soil, and other things inside the building. Air warmed by the heat from hot interior surfaces is retained in the building by the roof and wall. In addition, the warmed structures and plants inside the greenhouse re-radiate some of their thermal energy in the infra-red, to which glass is partly opaque, so some of this energy is also trapped inside the glasshouse. However, this latter process is a minor player compared with the former (convective) process. Thus, the primary heating mechanism of a greenhouse is convection. This can be demonstrated by opening a small window near the roof of a greenhouse: the temperature drops considerably. This principle is the basis of the autovent automatic cooling system. Thus, the glass used for a greenhouse works as a barrier to air flow, and its effect is to trap energy within the greenhouse. The air that is warmed near the ground is prevented from rising indefinitely and flowing away.
Although there is some heat loss due to thermal conduction through the glass and other building materials, there is a net increase in energy (and therefore temperature) inside the greenhouse.
Greenhouses can be divided into glass greenhouses and plastic greenhouses. Plastics mostly used are PEfilm and multiwall sheet in PC or PMMA. Commercial glass greenhouses are often high tech production facilities for vegetables or flowers. The glass greenhouses are filled with equipment like screening installations, heating, cooling, lighting and may be automatically controlled by a computer.
This text uses material from Wikipedia, licensed under CC BY-SA