with giant reptiles. Another one, from this month, suggested that humans change the habitats they enter much more quickly than previously thought, at least in some ecosystems. For more information: Test of Martin’s overkill hypothesis using radiocarbon dates on extinct megafauna ]]>
![Hunting Contributed to Mammoth Demise](https://www.newhistorian.com/wp-content/uploads/2015/10/Painting-of-Mammoths-1.jpg)