> As protohumans and humans invaded lands, they likely extincted megafauna... It is not as certain as most non-experts believe and a controversial subject amon

> As protohumans and humans invaded lands, they likely extincted megafauna... It is not as certain as most non-experts believe and a controversial subject among experts why megafauna seems to have died out globally rather quickly. So to use "likely" is too strong. "Possibly," is a far better descriptor here: did a global human population of only 1M-15M at the end of the last ice age really kill all of the megafauna everywhere, at once? Humans possibly contributed, but with only sticks and stones technology, how could so few kill every last one of what must have been enormous populations of megafauna? And why?