L'effetto serra più noto si è verificato 55 milioni di anni fa (epoca Eocene)

Direi effetto serra, più che serra no? Per me si intende questo. Effetto serra in inglese è greenhouse effect, quindi guarda di seguito.

There is a difference between greenhouses and hothouses. Greenhouses are typically unheated structures used to start plants early, while hothouses are artificially heated structures that remain at a constant temperature year-round. While a greenhouse may be used to start tender annuals such as petunias or impatiens, hothouses will be used to grow houseplants and tropical flowers that require year-round warmth.



Read more: The Best of Hothouse Flowers | Garden Guides http://www.gardenguides.com/111742-hothouse-flowers.html#ixz...


Qui i termini sono praticamente utiizzati some sinonimi
http://www.bchothouse.com/environment-greenhouse.html

Greenhouses

EXTERIOR
What is a hot house anyway? A hot house is a weatherman’s dream, complete climate control 24 hours a day. The greenhouse structures are aluminum and steel, covered in glass and designed to make sure the right things happen at the right time in the right order. Located next to each greenhouse is “a retention pond” that collects rainwater that is then fed back into the greenhouse to be used in the irrigation system.
Si noti come durante il periodo caldo del Cretaceo, 95 milioni di anni fa, detto hothouse la temperatura fosse 2/3°C superiore al Paleocene Eocene Thermal Maximum (PETM) di 55 milioni di anni fa.

http://www.climatemonitor.it/?tag=effetto-serra

It is hypothesized that the Eocene hothouse world was caused by runaway global warming from released methane clathrates deep in the oceans. The clathrates were buried beneath mud that was disturbed as the oceans warmed. Methane (CH4) has ten to twenty times the greenhouse gas effect of carbon dioxide (CO2).

Si ritiene che questo intenso riscaldamento sia stato causato dall'espulsione di clatrati di metano dai sedimenti marini; l'iniziale aumento della temperatura provocò il rilascio dei clatrati dai fondi oceanici, e a sua volta il gas liberato nell'atmosfera produsse un effetto serra paragonabile all'emissione di due miliardi di tonnellate di anidride carbonica.[7]

Eocene_Wikipedia EN e IT

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Note added at 33 mins (2011-06-22 16:24:07 GMT)
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La hothouse è un tipo di serra, non già il riscaldamento dell'ambiente.

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Note added at 7 hrs (2011-06-22 23:04:26 GMT)
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The scientists beginn to confess, that the reason is in the Hothouse effect and the ozone layer getting thinner, and their prognoses for the future aren't optimtstic at all - more bigger cataclysms, which will remind usmuch more often, that the existing of the modern man is not unharmful for the enviroment at all.
But what is actually the Hothause effect? We open the enciyclopedia and read: thei is the holding of the heat from the lower layers of the atmosphere, which occurs through holdig of the longwave sumbeaming

The Global warming , result of the Hothouse effect is one of the basic dangers - the average annual temperatures are increasing constantly.


1) hothouse effect
2) glasshouse effect
3) greenhouse effect
an effect whereby infrared radiation, i.e. heat, emitted by a body that has absorbed energy from the sun, is trapped in a space enclosed by glass or other material that is largely opaque to infrared radiation greater than 2,5 ¼ (hence preventing radiant heat losses) but transparent to other incoming solar radiation. In a vacuum half of the energy absorbed is re-emitted towards the closed space
GRM: n. (1,2,3)

http://www.energy.eu/dictionary/data/811.html


EFFETTO SERRA
Da milioni di anni la terra è costantemente irraggiata dalle radiazioni elettromagnetiche provenienti dal sole, scaldano il nostro pianeta e danno origine alla vita. Quello che citiamo spesso come "il problema dell'effetto serra" è in realtà un fenomeno naturale da sempre presente sulla terra. Dall'effetto serra deriva la temperatura terrestre. Senza l'effetto serra la temperatura del globo sarebbe in media 30 gradi più fredda, ovvero oscillerebbe intorno ad una temperatura di -18° C

http://www.ecoage.it/effetto-serra.htm