These changes serve as the predictors for when an Ice Age can be expected to occur. While these changes occur over a massive timeline when compared to a person’s lifespan, on an astronomical ...

This cold spell, whose precise timeline scholars debate, ... a new paper published recently in Science Advances gives an up-to-date picture of the events that brought about the Little Ice Age.

Ancient footprints upend timeline of humans’ arrival in North America. New evidence adds to work showing people made these prints sometime between 21,000 and 23,000 years ago ...