We hit the last glacial maximum around 16,000 years ago, but basically, from 70,000 years on, things were getting really tough, getting very cold. The Northern Hemisphere had massive growing ice sheets.
在一万六千年前我们到达了最后的冰河时代， 但基本上从七万年前开始，气候变得很严酷。 变得很冷。北半球全是冰层，