Even though we do not know the climate variations in detail so far back, we know that there were abrupt climate shifts in the warm climate back then,» points out Peter Ditlevsen. (sciencedaily.com)
Famine from abrupt climate shifts has been equally dramatic and even faster, with some isolated populations wiped out entirely on many occasions. (williamcalvin.com)
«There are global indications of abrupt climate shifts at the end of substage 5e. (judithcurry.com)