Sentences with phrase «at least the early 20th»

The age requirement is an arbitrary limit, that has been challenged since at least the early 20th century.

Not exact matches

The tree - ring record the researchers cobbled together confirms earlier research that suggests the mid-18th and early 20th centuries were the driest periods in the southern Appalachian Mountains since at least 1700, while extending the record further back in time to document a «substantial» drought from 1669 to 1709.

I can't say, therefore, that the book is better than the film or vice versa, but given the vistas captured by Caroline Champetier in widescreen lensing, we get at least as good an idea what of farm like was like in Europe during the early part of the 20th Century.

In spotlighting Ingmar Bergman's magnum opus Fanny and Alexander as one of the great films of the 1980s, one can not help but marvel at how out of step with the «80s it is, and least of all for its period setting in the early years of the 20th century.

[Response: The main issue is that in the real world many things trended up in the 20th Century — sulphate aerosols, CO2, black carbon, maybe even solar for the earlier part at least.

Post # 70 was suggesting that CO2 emissions followed an exponential course over a long period, and that therefore the corresponding forcing was linear over the same period (at least since the early 20th century, as this was a response to # 68).

This is because many of the world's weather stations are currently in urbanized areas, but in the late 19th / early 20th centuries, these areas were rural (or at least less urbanized).

The trend in the early 20th century is at least a third of that, so the man - made element would appear to be only about 0.6 ° to 0.7 ° per century.

In that sense one could argue that Arctic sea ice extent at least in 1940 was «very low» compared to the early and mid 20th Century, but compared to the past 20 years it was actually very high.

All we know clearly is that CO2 doesn't appear to have been a significant factor in the early 20th Century warming period, but does appear to be at least a significant factor in the warming between 1970 and around 2000.

At least as early as the beginning of the 20th century, different authors were already examining the evidence for climate changes during the last two millennia, particularly in relation to North America, Scandinavia and Eastern Europe (Brooks, 1922).