New study shows how the ancient Martian climate changed with time in the Thaumasian Highlands region on Mars

New study shows how the ancient Martian climate changed with time in the Thaumasian Highlands region on Mars
New evidence from Martian valley networks confirms a gradual climate shift from warm and wet during the Noachian period, around 4 billion years ago, to cold and icy by the Hesperian period, around 3 billion years ago.