Sentences with phrase «existed during the last ice age»

Harvard University's George Church, the lead researcher working to de-extinct the mammoth, says that bringing back the giants could help convert the Arctic tundra back to grasslands that existed during the last ice age.

Not exact matches

The preconditions which gave rise to rapid temperature changes during the last ice age do not exist today, but sudden climate changes can not be excluded in future.»

While the conditions in the geological past are useful indicators in suggesting climate and atmospheric conditions only vary within a a certain range (for example, that life has existed for over 3 billion years indicates that the oxygen level of the atmosphere has stayed between about 20 and 25 % throughout that time), I also think some skeptics are too quick to suggest the lack of correlation between temperature and CO2 during the last 550 million years falsifies the link between CO2 and warming (too many differences in conditions to allow any such a conclusion to be drawn — for example the Ordovician with high CO2 and an ice age didn't have any terrestrial life).

Warm ocean water existed south of Greenland, wedged between two major ice sheets during the last ice age.