Science News: Ancient Climate Change and Modern Macroevolution

I’m putting this bit of human biogeography under the “species coming and going” category:

Greenland DNA could hold key to migration mysteries: researchers from PhysOrg.com
Danish researchers are to sieve through human and skeletal remains on Greenland in a quest to explain an enduring enigma over the island’s settlement over thousands of years, one of the scientists said Tuesday.[]

This is a very large change in diet over a very short period of time. I call Macro Evolution!

Study links success of invasive Argentine ants to diet shifts from PhysOrg.com
The ability of Argentine ants to change from carnivorous insect eaters to plant sap-loving creatures has helped these invasive social insects rapidly spread throughout coastal California, according to a new study, displacing many native insects and creating ant infestations familiar to most coastal residents.[]

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