This newly extracted ice preserved a record of our planet’s climate history, continuous information on atmospheric temperatures, and some clear samples of old air with greenhouse gases. “This is the longest continuous record of our past climate from an ice core,

Scientists have drilled a deep hole in the Antarctic bedrock that may hold information that dates back more than a million years.

Analysis of the ancient ice is expected to show how Earth’s atmosphere and climate have evolved. That should provide insight into how Ice Age cycles have changed, and may help in understanding how atmospheric carbon changed climate,